Zone 220, Master Map -04°00' Normal View Zone Master, Normal View, 10 deg FOV -06°00' β η 7 α ε -08°00' c e τ Octans ν -12°00' Scutum -10°00' ζ δ d -14°00' f γ 19h 04m 18h 56m 18h 48m 18h 40m 18h 32m 18h 24m 18h 16m 18h 08m 18h 00m Zone 220, Map 1 Normal Image -05°00' Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. Schjellerup 16 -06°00' Barton 479 -07°00' STF 2313 = IC 1276 h857 A 36 7 STF 2303 τ Tau Oph Bos 2856 ζ NGC 6517 Octans ν 18h 30m 18h 25m 18h 20m 18h 15m 18h 10m 18h 05m 18h 00m -09°00' -08°00' NGC 6539 Zone 220, Map 1 Mirror Image -05°00' Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. -06°00' Schjellerup 16 -07°00' STF 2313 = IC 1276 7 h857 A 36 -08°00' NGC 6539 STF 2303 Tau Ophτ -09°00' Bos 2856 ζ NGC 6517 Octans Nu Oph 18h 00m 18h 05m 18h 10m 18h 15m 18h 20m 18h 25m 18h 30m Zone 220, Map 2 Normal Image -11°00' ν -10°00' Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. -12°00' Hipparcos 2579 NGC 6631 -13°00' NGC 6604 H 19 Hussey 191 γ -14°00' NGC 6611 Gamma Sct Hussey 61 STF 2306 18h 30m 18h 25m 18h 20m NGC 6605 18h 15m NGC 6574 18h 10m 18h 05m 18h 00m Zone 220, Map 2 Mirror Image Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. Hipparcos 2579 NGC 6631 -13°00' NGC 6604 -12°00' -11°00' -10°00' Nu Oph H 19 Hussey 191 -14°00' NGC 6611 γ Hussey 61 NGC 6574 18h 00m 18h 05m 18h 10m 18h 15m NGC 6605 18h 20m STF 2306 18h 25m 18h 30m Zone 220, Map 3 Normal Image Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. -05°00' β η Jonckheere 2241 -06°00' NGC 6704 H VI 50 NGC 6683 -07°00' PK 27-3.2 Basel 1 STF 2391 rej NGC 6705 Glasenapp 14 Jonckheere 2680 STF 2405 rej STF 2350 rej Bur 969 NGC 6664 ε Jonckheere 2156 Bur 419 α -08°00' Hipparcos 2654 Alpha Sct STF 2388 rej NGC 6712 -09°00' IC 1295 δ Rossiter 4594 PK 23-2.1 STF 2325 Bur 247 NGC 6694 19h 00m 18h 55m 18h 50m 18h 45m 18h 40m 18h 35m 18h 30m Zone 220, Map 3 Mirror Image Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. -05°00' β NGC 6704 η Jonckheere 2241 H VI 50 STF 2391 rej Basel 1 -06°00' Barton 479 NGC 6705 Glasenapp 14 Jonckheere 2680 PK 27-3.2 -07°00' NGC 6683 STF 2405 rej α NGC 6664 Alpha Sct Hipparcos 2654 -08°00' STF 2350 rej Bur 419 Bur 969 ε STF 2388 rej -09°00' NGC 6712 IC 1295 δ Rossiter 4594 PK 23-2.1 STF 2325 Bur 247 18h 30m 18h 35m NGC 6694 18h 40m 18h 45m 18h 50m 18h 55m 19h 00m Zone 220, Map 4 Normal Image -10°00' Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. IC 1287 Barton 2755 Hipparcos 2664 PK 21-1.1 -11°00' NGC 6649 STF 2373 -13°00' -12°00' A 1889 PK 21-5.1 Bur 135 PK 19-5.1 Leonard 20 Bur 967 STF 2337 18h 55m γ Fox 231 h5503 19h 00m -14°00' PK 19-4.1 18h 50m 18h 45m 18h 40m 18h 35m 18h 30m Zone 220, Map 4 Mirror Image -10°00' Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. NGC 6649 -11°00' STF 2373 IC 1287 PK 21-1.1 Barton 2755 Hipparcos 2664 -13°00' Sagittarius PK 21-5.1 γ Bur 135 Bur 967 Gamma Sct -14°00' PK 19-4.1 Leonard 20 PK 19-5.1 STF 2337 h5503 Fox 231 18h 30m 18h 35m 18h 40m 18h 45m -12°00' A 1889 18h 50m 18h 55m 19h 00m Zone 220 2 Reference Stars, 35 Double Stars, 1 Bright Nebula, 1 Planetary Nebula, 12 Open Clusters, 3 Globular Clusters, 1 Galaxy A Hussey 61............................................... 9 A 1889 ................................................. 32 A 36 ....................................................... 4 Alpha Sct ............................................. 14 I IC 1287 ................................................ 37 IC 1295 ................................................ 28 B J Barton 2755 ......................................... 35 Barton 479 ............................................. 3 Basel 1 ................................................. 27 Bos 2856 ................................................ 4 Bur 135 ................................................ 34 Bur 247 ................................................ 15 Bur 419 ................................................ 22 Bur 967 ................................................ 35 Bur 969 ................................................ 19 Jonckheere 2156 .................................. 21 Jonckheere 2241 .................................. 20 Jonckheere 2680 .................................. 19 L Leonard 20 ........................................... 33 N NGC 6517 .............................................. 7 NGC 6539 .............................................. 7 NGC 6574 ............................................ 13 NGC 6604 ............................................ 11 NGC 6605 ............................................ 12 NGC 6611 ............................................ 10 NGC 6631 ............................................ 13 NGC 6649 ............................................ 38 NGC 6664 ............................................ 24 NGC 6683 ............................................ 29 NGC 6694 ............................................ 24 NGC 6704 ............................................ 25 NGC 6705 ............................................ 22 NGC 6712 ............................................ 26 F Fox 231 ................................................ 32 G Gamma Sct ............................................ 8 Glasenapp 14 ....................................... 17 H H 19 ..................................................... 12 H VI 50 ................................................ 16 h5503 ................................................... 33 h857 ....................................................... 5 Hipparcos 2579...................................... 9 Hipparcos 2654.................................... 18 Hipparcos 2664.................................... 34 Hussey 191 ............................................ 8 P PK 19-4.1 ............................................. 39 -1- Zone 220 PK 19-5.1............................................. 36 PK 21-1.1............................................. 37 PK 21-5.1............................................. 37 PK 23-2.1............................................. 30 PK 27-3.2............................................. 27 STF 2325.............................................. 14 STF 2337.............................................. 31 STF 2350 rej ........................................ 18 STF 2373.............................................. 31 STF 2388 rej ........................................ 16 STF 2391 rej ........................................ 15 STF 2405 rej ........................................ 17 R Rossiter 4594 ....................................... 20 T S Tau Oph ................................................. 5 STF 2303 ............................................... 6 STF 2313 ............................................... 3 -2- Zone 220 Zone 220, Map 1 Double Stars Easy STF 2313 Rating: 2 E ADS 11318; HD 169392; SAO 142290 Position: 1825-0636 A B Magnitude 7.18 8.72 Separation PA — — 6.0 196 - Year — 1991 Spectra G0 IV Colors Y O Notes: 1832: 6.1 @ 199. 28 measurements. The stars share common proper motion. Observations: C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 8.55 inches. Separation: AB = 2.15 miles. Distance (LY): 230 Total luminosity (Suns): 6.8 Barton 479 Position: 1830-0522 A B Magnitude 10.02 10.21 Rating: 3 E Separation PA — — 5.5 + 281 +? Year — 1991 Spectra G5 Notes: 1906: 5.0 @ 100. 4 measurements. Quadrant reversal in 1906? Observations: C11 at 98x. -3- Colors W W Zone 220 Bos 2856 Rossiter 3998 (B); HD 166050; SAO 142120 Rating: 4 E Position: 1809-0817 A B Magnitude 9.69 10.80 Separation PA — — 11.8 124 Year — 1963 Spectra A0 Colors W W? Notes: 1 measurement. Observations: C11 at 98x. It is part of a narrow isosceles triangle. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.74 inches. Separation: AB = 1.89 miles. Distance (LY): 103 Total luminosity (Suns): 0.249 A 36 Rating: 5 E ADS 11165; HD 166761; SAO 142150 Position: 1812-0718 A B Magnitude 7.72 11.47 Separation PA — — 69.2 + 40 - Year — 1984 Notes: 1899: 65.6 @ 42. 5 measurements. B has a companion (11.30m) at 1.5 @ 210 (1995). Observations: C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 16.6 inches. Separation: AB = 29.2 miles; Bb = 246 feet. -4- Spectra G0 Colors W ? Zone 220 Distance (LY): 270 Total luminosity (Suns): 5.4 Moderate h857 Rating: 4 M HD 167832; SAO 142193 Position: 1817-0717 A B Magnitude 8.36 13.05 Separation PA — — 21.2 20 Year — 1901 Spectra A0 Colors W ? Notes: 1 measurement. Observations: C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.26 inches. Separation: AB = 34.1 miles. Distance (LY): 1,030 Total luminosity (Suns): 37.5 Difficult Tau Oph 69 Oph; STF 2262; ADS 11005; HD 164765; SAO 142050 Rating: 3 D Position: 1803-0811 A B C Magnitude 4.80 5.94 11.28 Separation — 1.7 + 99.8 - PA — 282 +!! 125 - Year — 1999 1987 Spectra F5 V F2 V Colors Y Y W Notes: AB 1835: 0.4 @ 193. Over 100 measurements. The orbital period is 280.03 years (Wierzbinski, 1959) with semi-major axis of 1.49" and direct motion. Star A is a spectroscopic binary. -5- Zone 220 AC 1879: 100.3 @ 127. 9 measurements. Observations: C8 at 206x. Some see both as W while Webb saw A as Y. Moderate field. Scale model (in which the Sun is the size of a baseball): Diameter: A = 4.35 inches; B = 10.1 inches. Separation: AB = 2,082 feet; AC = 26.5 miles. Distance (LY): 170 Total luminosity (Suns): 38.3 STF 2303 Rating: 5 D ADS 11262; HD 168459; SAO 142229 Position: 1820-0759 A B Magnitude 6.69 9.41 Separation PA — — 1.6 -! 240 +! Year — 1991 Spectra F5 V Colors W ? Notes: 1825: 3.2 @ 213. 66 measurements. Observations: C8 at 280x. Webb saw them as yW and ?. The field is sparse owing to heavy absorption in this area. Scale model (in which the Sun is the size of a baseball): Diameter: A = 4.35 inches. Separation: AB = 2,957 feet. Distance (LY): 227 Total luminosity (Suns): 11.1 -6- Zone 220 Deep Sky Objects Difficult NGC 6517 Other Names: H II 199 Astronomical League Program: Herschel 400 Club Rating: 5 D Position: 1802-0858 Type: Gc Dimensions: 1' Class: 4 Magnitude: 12.0 Notes: The brightest stars are 16.0m and the horizontal branch is 18.0m. This is the faintest of the telescopically discovered globulars, but that is due in part to the very high degree of absorption here (5.4m). Observations: C8 at 83x. Faint and small; a featureless smudge in a faint field. Model (where the Sun is a baseball): Its diameter would be 2,430 miles. Distance (LY): 26,000 Luminosity (suns): 120,000 NGC 6539 Position: 1805-0735 Type: Gc Dimensions: 2.5' Rating: 5 D Class: 10 Magnitude: 12.0 Notes: The brightest stars are 15.9m and the horizontal branch is 18.3m. Interstellar absorption for this object is a staggering 7.0m! Observations: C8 at 83x. Faint, dull and even. It takes high power well. -7- Zone 220 Model (where the Sun is a baseball): Its diameter would be 1,760 miles. Distance (LY): 7,500 Luminosity (suns): 44,000 Zone 220, Map 2 Reference Star Gamma Sct (HD 170296; SAO 161520) Position: 1829-1434 Mag : 4.67 Assumed distance: 291 light years Spectrum : A3 V Color : W Assumed luminosity (suns): 87 Double Stars Easy Hussey 191 Rating: 5 E ADS 10952 Position: 1800-1346 A B Magnitude 10.43 10.91 Separation PA — — 4.2 120 - Notes: 1900: 4.3 @ 121. 10 measurements. Observations: C11 at 98x. Too bad it is so faint! -8- Year — 1991 Spectra A9 V Colors W W Zone 220 Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.30 inches. Separation: AB = 4,013 feet. Distance (LY): 117 Total luminosity (Suns): 0.121 Moderate Hussey 61 Rating: 3 M ADS 11252 Position: 1820-1447 A B Magnitude 9.76 10.64 Separation PA — — 2.4 = 117 = Year — 1991 Spectra A0 IV/V Colors W W Notes: 1899: 2.4 @ 117. 9 measurements. Observations: C11 at 193x. Hipparcos 2579 Rating: 5 M HD 167518; SAO 161242 Position: 1816-1111 A B Magnitude 7.73 11.90 Separation PA — — 8.4 113 Notes: 1 measurement. Observations: C11 at 193x. -9- Year — 1991 Spectra F5 Colors W ? Zone 220 Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.8 inches. Separation: AB = 3.77 miles. Distance (LY): 288 Total luminosity (Suns): 5.51 Deep Sky Objects Easy NGC 6611 Rating: 2 E Other Names: Melotte 198; Collinder 375; The Eagle Nebula; The Star Queen Nebula; M16 Astronomical Leage Program: Messier Club, Messier Binocular Club Position: 1819-1347 Type: Oc Dimensions: 6' Class: II 3mn Cluster population: 100 Magnitude: 6.5 Notes: De Cheseaux first made note of it in 1746, noting only the cluster. (The nebula was not detected until Isaac Roberts photographed the cluster in 1875.) Messier added it to his catalog on June 3, 1764, and incredibly, hints at the nebula by this description: "cluster of small stars, mingled with a faint light... with a small telescope this cluster appears in the form of a nebula." It would seem reasonable that Messier was simply describing the grainy background this cluster would show in a small, poor telescope. It is 66 x 53 light years in diameter. It is 5 million years old, and lies 19,000 light years from the galactic center and 120 light years above the galactic plane. It is part of the Ser OB1 association. The brightest star is 8.2m. The nebula has the mass of 12,500 Suns and is 70 light years in diameter. Observations: C8 at 104x. Seems to have two centers, with nebulosity? It contains many "chains" and doublets. Note the "elephant's trunk" in the middle of the nebula. 14x70 Binos. Four stars resolved and apparent nebulosity or unresolved background stars. - 10 - Zone 220 Model (where the Sun is a baseball): Its diameter would be 4,490 miles with stars 970 miles apart. Distance (LY): 5,700 Luminosity (suns): 6,380 NGC 6611 (M16) Open cluster (II 3 mn; 100 stars) Observed with C8 on 8/22/92 Magnification: 80x NGC 6604 Other Names: Collinder 373, H VIII 15 Astronomical League Program: Herschel II Club Rating: 3 E Position: 1818-1214 Type: Oc Dimensions: 2' Class: I 3mn Cluster population: 30 - 11 - Magnitude: 6.5 Zone 220 Notes: This cluster is 4 million years old (the earliest spectral type is O9), and it is 21,400 light years from the galactic center and 200 light years above the galactic plane. Observations: C8 at 104x. It resembles a miniature Corona Borealis; dominated by a 6.5m Y star, plus 7 other stars. The background looked grainy at 104x. C11 at 98x. It overflowed the field by a factor of 100%. Very, very rich! Model (where the Sun is a baseball): Its diameter would be 430 miles with stars 139 miles apart. Distance (LY): 5,530 Luminosity (suns): 4,160 NGC 6605 Other Names: H VIII 47 Rating: 4 M Position: 1817-1458 Type: Oc Magnitude: 6.0 Notes: The Revised New General Catalog says this is probably not a cluster. But William Herschel described it as a "loose straggling cluster." Observations: C8 at 206x. Six stars and haze with a NE to SW axis. I'd estimate the magnitude to be about 11.0, not 6.0. H 19 Position: 1817-1320 Type: Oc Cluster population: 40 Rating: 4 M Magnitude: 10.0 Dimensions: 5' Observations: C8 at 206x. Faint, averted vision will be a big help in seeing it. Rich field. - 12 - Zone 220 Difficult NGC 6574 Other Names: NGC 6610 Rating: D Position: 1812-1459 Type: Gal Surface brightness: 12.3 Class: SAB(rs)bc: Dimensions: 1.5' x 1.1' Magnitude: 12.0 PA: 160 Observations: C11 at 140x. I could only extract a 10" x 15" patch of uniform luminescence. Distance (LY): 110,000,000 Radial velocity (km/sec): +2,282 Total luminosity (Suns): 15,000,000,000 NGC 6631 Other Names: Collinder 379 Rating: 5 D Position: 1827-1202 Type: Oc Dimensions: 5.0' Class: II 2m Cluster population: 30 Magnitude: 11.7 Notes: This cluster is 398 million years old. Observations: C8 at 104x. I counted six faint stars in an oblong shape with a grainy backdrop. Distance (LY): 8,450 Total luminosity (Suns): 117 - 13 - Zone 220 Zone 220, Map 3 Reference Star Alpha Sct (1 Sct; HD 171443; SAO 142408) Position: 1835-0815 Mag : 3.85 Spectrum : K2 III Color : O Assumed distance: 174 light years Assumed luminosity (suns): 66 Notes: This star is an infra-red source. Double Stars Easy STF 2325 Bur 247; ADS 11429; HD 170901; SAO 142374 Rating: 3 E Position: 1832-0922 A B Magnitude 5.77 9.47 Separation PA — — 12.4 = 257 - Year — 1991 Spectra B2 V Colors W R Notes: 1829: 12.4 @ 258. 20 measurements. Observations: C8 at 104x. It dominates a bleak field and is enveloped in a very faint galactic nebula, IC 1287. See if you can spot the dust lane just to the SE. Some see both as W. Franks saw W and B. Scale model (in which the Sun is the size of a baseball): Diameter: A = 13.2 inches. Separation: AB = 13.0 miles. Distance (LY): 670 Total luminosity (Suns): 21 - 14 - Zone 220 STF 2391 rej Rating: 3 E ADS 11695; HD 174005; SAO 142640 Position: 1849-0600 A B Magnitude 6.50 9.59 Separation PA — — 38.1 + 333 = Year — 1982 Spectra A2 II G2 Colors Y W Notes: 1829: 37.9 @ 333. 21 measurements. The stars share common proper motion. Observations: C8 at 83x. Rich field. Scale model (in which the Sun is the size of a baseball): Diameter: A = 54 inches; B = 19.6 inches. Separation: AB = 31.5 miles. Distance (LY): 530 Total luminosity (Suns): 63 Bur 247 Rating: 4 E ADS 11429; HD 170901; SAO 142374 Position: 1832-0922 A B Magnitude 7.91 10.93 Separation PA — — 7.9 + 167 = Year — 1991 Notes: 1875: 7.6 @ 167. 11 measurements. Observations: C11 at 98x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 51 inches. Separation: AB = 8.26 miles. Distance (LY): 670 Total luminosity (Suns): 26 - 15 - Spectra A0 II Colors W W? Zone 220 STF 2388 rej Rating: 4 E HD 174069; SAO 142648 Position: 1849-0828 A B C BC Magnitude 7.79 9.90 10.00 Separation PA — — 54.1 345 + 21.4 = 19= Year — 1988 Spectra B2 V Colors W W ? 1988 Notes: AB 1892: 54.8 @ 344. 5 measurements. BC 1892: 21.4 @ 19. 5 measurements. Observations: C8 at 104x. A 10.4m star is 60" away in pa 355. Scale model (in which the Sun is the size of a baseball): Diameter: A = 13.2 inches. Separation: AB = 532 miles; BC = 210 miles. Distance (LY): 6,300 Total luminosity (Suns): 2,830 H VI 50 Rating: 4 E ADS 11719; HD 174208; SAO 142661 Position: 1850-0555 A B C Magnitude 6.15 12.30 8.23 Separation — 23.5 + 111.8 - PA — 359 + 171 = Year — 1934 1991 Spectra K1 II Colors D! ? B Notes: AB 1879: 22.5 @ 357. 4 measurements. AC 1879: 114.0 @ 171. 16 measurements. A is a long-period spectroscopic binary. May be optical because Hipparcos gives different distances (1,490 (A) and 245 (B) light years). - 16 - Zone 220 Observations: C11 at 98x. C was very difficult. Glasenapp 14 Position: 1852-0618 A B Magnitude 10.85 11.40 Rating: 4 E Separation PA — — 7.2 23 + Year — 1910 Spectra Colors W W Notes: 1890: 7.3 @ 22. 2 measurements. Observations: C11 at 98x. It lies 1 min E of M11. STF 2405 rej Bur 1465 (B); ADS 11764; HD 174701; SAO 142725 Rating: 4 E Position: 1852-0716 A B C Magnitude 8.00 11.40 10.80 Separation — 13.9 25.2 + PA — 115 302 = Year — 1904 1981 Notes: AB 1 measurement. AC 1848: 25.1 @ 302. 8 measurements. Observations: C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.0 inches. Separation: AB = 7.70 miles; AC = 14.0 miles. Distance (LY): 355 Total luminosity (Suns): 6.08 - 17 - Spectra B9 IV Colors W No B Zone 220 STF 2350 rej Rating: 5 E ADS 11552; HD 172348; SAO 142480 Position: 1840-0747 A B Magnitude 5.84 10.90 Separation PA — — 19.4 195 = Year — 1959 Spectra K0 III Colors O! ? Notes: 1848: 24.5 @ 195. 8 measurements. The primary is an infra-red source. Observations: C8 at 104x. It lies in the midst of the Scutum Star Cloud. Scale model (in which the Sun is the size of a baseball): Diameter: A = 46.2 inches. Separation: AB = 16.0 miles. Distance (LY): 530 Total luminosity (Suns): 111 Hipparcos 2654 Rossiter 4595 (AB); HD 173202; SAO 142564 Rating: 5 E Position: 1845-0737 A B C Magnitude 8.39 12.30 10.53 Separation — 2.1 13.8 PA — 73 + 322 Notes: AB 1938: 2.4 @ 69. 3 measurements. AC 1 measurement. Observations: C11 at 98x. - 18 - Year — 1987 1991 Spectra F0 Colors W No O Zone 220 Bur 969 SS Sct; ADS 11726; HD 174325; SAO 142674 Rating: 5 E Position: 1851-0754 A B C Magnitude 6.82 11.90 12.50 Separation — 14.4 + 44.1 PA — 239 + 102 Year — 1962 1913 Spectra C5 II Colors yW ? No Notes: AB 1880: 14.3 @ 237. 8 measurements. AC 1 measurement. S Scuti, variable 9.7-10.9, 148 days. The primary is an infra-red source. Observations: C8 at 104x. Very rich field. Scale model (in which the Sun is the size of a baseball): Diameter: A = 9.60 inches. Separation: AB = 29.0 miles; AC = 88.8 miles. Distance (LY): 1,290 Total luminosity (Suns): 302 Jonckheere 2680 Rating: 5 E HD 174939 Position: 1853-0627 A B Magnitude 9.17 10.59 Separation PA — — 80.0 320 Notes: 1 measurement. Observations: C8 at 104x. - 19 - Year — 1943 Spectra K2 Colors W W? Zone 220 Jonckheere 2241 Rating: 5 E Position: 1856-0552 A B C BC Magnitude 10.35 10.93 11.80 Separation PA — — 20.0 215 4.0 + Year — 1942 1982 Spectra Colors W W No 259 - Notes: AB 1 measurement. BC 1942: 2.0 @ 270. 2 measurements. Observations: C8 at 104x. The magnitudes seem fainter than what is listed— I'd say more like 10.6 and 10.8. This star is the apex of a very flat triangle with two 7.5m stars (to the NE and SW). Rich field. Moderate Rossiter 4594 Delta Sct; ADS 11581; HD 172748; SAO 142515; H V 36 (AC) Rating: 3 M Position: 1842-0903 A B C D Magnitude 4.70 12.20 10.56 10.50 Separation — 15.2 52.2 110.1 PA — 47 + 131 + 265 Notes: AB 1938: 15.3 @ 46. 3 measurements. AC 1879: 52.4 @ 130. 12 measurements. AD 1 measurement. - 20 - Year — 1963 1982 1982 Spectra F3 III Colors Y ? R No Zone 220 The primary is a spectroscopic binary, as well as a pulsating variable. It is 1.9 times as massive as the sun, and 3 times as large. It is also a Delta Scuti variable and a member of the Hyades group. The Sun is travelling in the general direction of Delta and in about 1.25 million years, Delta will be much brighter in our sky than it presently is due to its proximity. In fact, it will be the brightest star in our sky. Observations: C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 9.00 inches. Separation: AB = 4.43 miles; AC = 15.2 miles; AD = 32.1 miles. Distance (LY): 187 Total luminosity (Suns): 37.64 Jonckheere 2156 Rating: 5 M HD 175664; SAO 142829 Position: 1857-0826 A B C BC Magnitude 7.75 11.76 12.20 Separation PA — — 52.4 1+ 4.6 + Year — 1948 1948 307 - Notes: AB 1942: 60.0 @ 0. 2 measurements. BC 1942: 3.0 @ 310. 2 measurements. Observations: C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.03 inches. Separation: AB = 70.3 miles; BC = 6.17 miles. Distance (LY): 860 Total luminosity (Suns): 41 - 21 - Spectra A0 Colors W ? No Zone 220 Difficult Bur 419 Rating: 3 D ADS 11430; HD 170921 Position: 1832-0750 A B Magnitude 8.38 9.42 Separation PA — — 1.1 34 -! Year — 1998 Spectra A0 Colors W W Notes: 1877: 1.2 @ 58. 29 measurements. Observations: C11 at 634x. Deep Sky Objects Easy NGC 6705 Rating: 1 E Other Names: Melotte 213; Collinder 391; The Wild Duck, M11 Astronomical Leage Program: Messier Club, Urban Deep Sky Club, Messier Binocular Club Position: 1851-0616 Type: Oc Dimensions: 13' Class: I 2r Cluster population: 870 Magnitude: 5.8 Notes: It was first discovered by G. Kirch in 1681. Halley included it in his list of 1715, as did John Bevis (1786 Celestial Atlas). De Mairan (1733) included it in a paper he published in 1733 and described it as "a very dense, small cloud and very similar to the Andromeda Nebula, were it not for the star which is seen close to the center." Cassini wrote of it (in 1740) that "one might imagine that they [nebulous stars] are formed of a great number of extremely small stars, so close to one another that they - 22 - Zone 220 cannot be resolved even by our best telescopes. It is the combined light of these which gives them their irregular shape and whitish color." De Cheseaux listed it in 1746, calling it "a prodigious cluster of small stars". Le Gentil listed it in 1759, as did Koehler in 1782. Bode included it in his 1777 catalog. Messier added it to his list on May 30, 1764. He described it as a "cluster of a large number of small stars... which can only be seen in a good instrument; with an ordinary telescope... it resembles a comet: this cluster is mingled with a faint glow; in this cluster is a star of 8th magnitude." It is 15 light years in diameter and 550 million years old. It has a density of 83 stars per cubic parsec. Robert Tumpler calculated that an observer at the center of M11 would see several hundred 1m stars— 40 or more would be brighter than Venus!! It lies 23,000 light years from the galaxy's center. Observations: C8 at 104x. An awesome and glorious sight! Note the dominant Y star (8m) at the center, and by all means, use high power! A dark streak in the S is the dark nebula Barnard 318. The "Wild Duck" name was coined by William Henry Smyth because he felt the appearance of the cluster resembled a flock of ducks in flight. William Herschel claimed to have seen it with the naked eye. 14x70 Binos. Mottled, triangular shape, with 9m star about 10m S (makes it look like a double star). NGC 6705 (M11, The Wild Duck) Open cluster (I 2 r; 870 stars) Observed with C8 on 8/22/92 Magnification: 104x Model (where the Sun is a baseball): Its diameter would be 7,550 miles with stars 395 miles apart. Distance (LY): 6,120 Luminosity (suns): 14,000 - 23 - Zone 220 NGC 6694 Rating: 2 E Other Names: Melotte 212; Raab 136, M26 Astronomical Leage Program: Messier Club, Messier Binocular Club Position: 1845-0924 Type: Oc Dimensions: 14' Class: II 3m Cluster population: 30 Magnitude: 8.0 Notes: It was discovered by Le Gentil in 1750; Messier added it to his list on June 20, 1764. It is 12 light years in diameter and 89 million years old. The earliest spectral type is B5, and 120 stars are known to be members. The brightest star is 10.3m. It lies 23,000 light years from the galactic center and 250 light years below the galactic plane. Observations: C8 at 104x. A triangle of 10m stars dominates this patchy cluster with a neat "kite" at the center. The overall pattern suggests a tuning fork. (Steve Coe calls it a wishbone shape.) 14x70 Binos. Three stars resolved and graininess. It is nestled inside a narrow 8m triangle. Model (where the Sun is a baseball): Its diameter would be 6,420 miles with stars 1,040 miles apart. Distance (LY): 5,200 Luminosity (suns): 1,330 NGC 6664 Other Names: Collinder 385, H VIII 12 Astronomical League Program: Herschel 400 Club Rating: 4 E Position: 1837-0813 Type: Oc Dimensions: 16' Class: III 2m Cluster population: 50 - 24 - Magnitude: 7.8 Zone 220 Notes: It is 140 million years old, with the earliest spectral type being B3. Over 60 stars are known to be members of this group, which lies 23,700 light years from the galactic center and just below its plane. The brightest star is 10.2m. Observations: C8 at 104x. Large, coarse and in a "U" shape. Model (where the Sun is a baseball): Its diameter would be 6,440 miles. Distance (LY): 3,800 Luminosity (suns): 860 Moderate NGC 6704 Other Names: Collinder 390 Rating: 3 M Position: 1851-0512 Type: Oc Dimensions: 5' Class: I 2m Cluster population: 60 Magnitude: 9.5 Notes: It is 20 million years old, with the earliest spectral class being B2. The brightest star is 12.2m. 71 stars are known to be members. It lies 22,000 light years from the galactic center and 250 light years below its plane. Observations: C8 at 206x. Tight and nebulous; it takes high power very well. It has a "J" shape and stands out starkly against the background. A dark nebula, B320, lies behind it. Rich field. Model (where the Sun is a baseball): Its diameter would be 2,760 miles with stars 329 miles apart. Distance (LY): 9,700 Luminosity (suns): 1,170 - 25 - Zone 220 NGC 6712 Other Names: Melotte 215, H I 47 Astronomical League Program: Herschel 400 Club Rating: 3 M Position: 1853-0842 Type: Gc Dimensions: 3' Class: 9 Magnitude: 9.0 Notes: The brightest stars are 13.3m and the horizontal branch is 16.3m. There is a great deal of obscuring dust between us and this globular dimming it by 2.7m. Observations: C8 at 206x. The cluster is semi-resolved at high power, with clearly resolved edges. Steve Coe points out an interesting observation: "Fine stardust... What is bizarre is that this object is round with averted vision and triangular with direct vision. This effect is not obviouis." No indeed— I missed it! C11 at 98x. Large and semi-resolved. C11 at 98x. Large, but not fully resolved. It was mottled. The field is very rich here. Class: 11. Model (where the Sun is a baseball): Its diameter would be 7,020 miles. Distance (LY): 25,000 NGC 6712 Globular cluster Observed with C11 on 9/24/03 Magnification: 98x Okie-Tex Star Party Luminosity (suns): 150,000 - 26 - Zone 220 Basel 1 Position: 1848-0551 Type: Oc Dimensions: 9' Rating: 4 M Class: I 2 m Cluster population: 15 Magnitude: 8.9 Notes: It is 78 million years old. Observations: C11 at 140x. Rich, small group about 10 min NW of STF 2391. I counted 17 stars, the brightest one being 12m. Model (where the Sun is a baseball): Distance (LY): 7,100 Luminosity (suns): 1,200 PK 27-3.2 Other Names: Vyssotsky 1-4 Rating: 5 M Position: 1854-0626 Type: Pn Class: 1 Magnitude: 13.4 Observations: C8 at 206x. It is a very faint fuzzy star (about 4" diameter) with a bright center. C11 at 98x. Nearly stellar. Set in a moderately rich but faint field. (Okie-Tex Star Party, 2003) Distance (LY): 32,600 Total luminosity (Suns): 363 See sketch, next page. - 27 - Zone 220 PK 27-3.2 Planetary nebula Observed with C11 on 9/25/03 Magnification: 98x Okie-Tex Star Party IC 1295 Other Names: PK 25-4.2 Rating: 5 M Position: 1855-0850 Type: Pn Dimensions: 1.5' Class: 3b Magnitude: 15.0 Notes: It is often mislabeled as IC 1298 Observations: C8 at 83x. This planetary gets lost in the traffic. Use averted vision. - 28 - Zone 220 Model (where the Sun is a baseball): Its diameter would be 600 miles. Distance (LY): 4,300 Luminosity (suns): 1 IC 1295 Planetary nebula (3b) Observed with C11 on 7/25/03 Magnification: 98x + O-III Difficult NGC 6683 Other Names: OCL 74 Rating: 4 D Position: 1842-0617 Type: Oc Dimensions: 11' Class: I 2 pn - 29 - Magnitude: 9.4 Zone 220 Notes: Probably not a true open cluster. The brightest star was only about 13.5m. Observations: C11 at 140x. Very faint and grainy area in a fantastically rich field. I counted 22 dim stars. The surrounding field is actually brighter-- maybe this cluster should be called "Hole in the Field". PK 23-2.1 Other Names: M1-59 Rating: 5 D Position: 1843-0905 Type: Pn Dimensions: 4.8'' x 4.3'' Class: 2 Magnitude: 12.4 Notes: Virtually stellar. Observations: C8 at 206x. It was barely detectable with averted vision. No details to report. C11 at 98x. Small object in a nice field. A 10m star dominates about 12 min to the NNE. Distance (LY): 4,700 Total luminosity (Suns): 19 PK 23-2.1 Planetary nebula Observed with C11 on 9/25/03 Magnification: 98x Okie-Tex Star Party - 30 - Zone 220 Zone 220, Map 1 Double Stars Easy STF 2337 Rating: 2 E ADS 11460; HD 171332; SAO 161630 Position: 1835-1442 A B Magnitude 8.14 9.05 Separation PA — — 16.6 297 = Year — 1991 Spectra A0 III/IV B9 II/III Colors O B Notes: 1825: 16.7 @ 297. 20 measurements. The stars share a small common proper motion. Observations: C8 at 83x. Very rich field. Webb saw them as W and B. Scale model (in which the Sun is the size of a baseball): Diameter: A = 19.2 inches; B = 10.2 inches. Separation: AB = 2.15 miles. Distance (LY): 83 Total luminosity (Suns): 0.73 STF 2373 Rating: 3 E ADS 11642; HD 173457; SAO 161805 Position: 1846-1030 A B Magnitude 6.95 8.21 Separation PA — — 4.1 337 - Notes: 1832: 4.2 @ 339. 41 measurements. - 31 - Year — 1997 Spectra F2 Colors O R Zone 220 Observations: C8 at 206x. Webb saw them as W and W. Rich field. Scale model (in which the Sun is the size of a baseball): Diameter: A = 10.9 inches. Separation: AB = 6.91 miles. Distance (LY): 1,080 Total luminosity (Suns): 149 Fox 231 Rating: 4 E ADS 11405 Position: 1831-1456 A B Magnitude 7.87 9.55 Separation PA — — 8.8 + 190 + Year — 1992 Spectra A3 V Colors W W Notes: 1905: 8.3 @ 188. 12 measurements. The stars have different proper motions and Hipparcos gives different distances (180 and 26 light years). Observations: C8 at 104x. Moderately rich field. A 1889 Rating: 4 E ADS 11783; HD 174887; SAO 161939 Position: 1853-1121 A B Magnitude 8.30 10.89 Separation PA — — 61.6 32 + Year — 1980 Spectra B9 Colors W bW Notes: 1907: 61.8 @ 31. 6 measurements. May be optical because Hipparcos gives different distances (700 and 24 light years). B has a 10.8m companion at 0.8 @ 118 (1926). - 32 - Zone 220 Observations: C8 at 104x. Leonard 20 Rating: 5 E ADS 11490; HD 171688 Position: 1837-1357 A B C Magnitude 10.18 10.90 10.97 Separation — 4.1 + 24.4 - PA — 257 121 + Year — 1983 1991 Spectra F0 III Colors W No W Notes: AB 1917: 4.0 @ 258. 3 measurements. AC 1905: 25.0 @ 120. 6 measurements. Observations: C8 at 104x. The field to the W is very bright. h5503 Rating: 5 E HD 175623; SAO 162012 Position: 1857-1451 A B Magnitude 7.15 11.76 Separation PA — — 37.7 79 = Year — 1980 Notes: 1903: 38.0 @ 79. 3 measurements. Observations: C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 10.2 inches. Separation: AB = 68.2 miles. Distance (LY): 1,160 Total luminosity (Suns): 102 - 33 - Spectra B9 II Colors B ? Zone 220 Moderate Hipparcos 2664 Rating: 4 M HD 173726; SAO 161824 Position: 1847-1113 A B Magnitude 8.77 10.74 Separation PA — — 6.8 38 + Year — 1991 Spectra A0 Colors W bW Notes: 1906: 6.9 @ 37. 3 measurements. Observations: C11 at 98x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.41 inches. Separation: AB = 9.97 miles. Distance (LY): 940 Total luminosity (Suns): 24 Bur 135 Soulie 218 (D, E); ADS 11512; HD 171957; SAO 161887 Rating: 5 M Position: 1838-1400 A B C D E Magnitude 6.58 10.50 14.70 10.47 11.49 Separation — 2.0 20.0 121 = 128 PA — 173 65 338 = 118 Year — 1953 1916 1992 1982 Spectra B9 IV Colors W No No W W? Notes: AB 1875: 2.4 @ 186. 10 measurements. AC 1 measurement. AD 1982: 121 @ 338. 2 measurements. May be optical because Hipparcos gives different distances (690 and 29 light years). Luminosity is given for AB, which are assumed to be binary. - 34 - Zone 220 AE 1 measurement. Observations: C11 at 98x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.0 inches. Separation: AB = 2.15 miles; AC = 21.5 miles; AD = 130 miles; AE = 138 miles. Distance (LY): 690 Total luminosity (Suns): 88 Barton 2755 Jonckheere 2139 Rating: 5 M Position: 1838-1111 A B Magnitude 10.34 10.40 Separation PA — — 3.7 +! 129 - Year — 1954 Spectra Colors W W Notes: 1906: 1.9 @ 135. 2 measurements. Observations: C11 at 98x. Difficult Bur 967 Rating: 5 D ADS 11564; HD 172475; SAO 161716 Position: 1841-1430 A B C Magnitude 7.97 11.50 12.59 Separation — 2.4 = 60.0 +! PA — 195 = 57 + Notes: AB 1880: 2.4 @ 195. 6 measurements. AC 1913: 38.8 @ 54. 2 measurements. - 35 - Year — 1962 1982 Spectra K0/1III Colors Y No W? Zone 220 Observations: C11 at 98x. Deep Sky Objects Easy PK 19-5.1 Other Names: M1-61 Rating: 3 E Position: 1846-1428 Type: Pn Dimensions: <5'' Class: 1 Magnitude: 12.5 Observations: C8 at 206x. A uniform disk; it is quite easy to identify with a good finder chart. C11 at 98x. Small diskette that lies about 15 min W of a 9m star. PK 19-5.1 Planetary nebula Observed with C11 on 9/25/03 Magnification: 98x Okie-Tex Star Party - 36 - Zone 220 Moderate IC 1287 Position: 1831-1050 Type: Gn Dimensions: 44' x 34' Rating: 3 M Class: 4 Magnitude: — Observations: C8 at 83x. It is lit by 5.5m STF 2325. The brightest area is an oval 3 min NE of STF 2325. A broadband skyglow filter was of help in seeing this faint nebula. Distance (LY): 782 PK 21-1.1 Other Names: M 1-51 Rating: 4 M Position: 1834-1107 Type: Pn Dimensions: 4" x 3" Class: 3 Magnitude: 13.0 Observations: C11 at 140x. A "star" that won't quite focus. It lies 2 min N of a 10m star. Uniform brightness (or dimness), no central star seen. Distance (LY): 7,500 Total luminosity (Suns): 28 PK 21-5.1 Other Names: M1-63 Rating: 4 M Position: 1852-1311 Type: Pn Dimensions: 4.4'' x 4.0'' Class: 2 Magnitude: 13.2 Observations: C8 at 206x. A fuzzy star at 104x, it takes on a planetary look at 200. It has a bright center, but no other details. - 37 - Zone 220 C11 at 98x. Very small but bright diskette set in a meandering N-S line of faint stars. (Okie-Tex Star Party, 2003) PK 21-5.1 Planetary nebula Observed with C11 on 9/25/03 Magnification: 98x Okie-Tex Star Party Difficult NGC 6649 Other Names: Collinder 384; Raab 133 Rating: 3 D Position: 1834-1024 Type: Oc Dimensions: 5' Class: I 3m Cluster population: 50 Magnitude: 8.9 Notes: This cluster is 50 million years old, and contains one Cepheid. The brightest star is 11.6m. It lies 23,000 light years from the galactic center and 70 light years below the galactic plane. - 38 - Zone 220 Observations: C8 at 104x. Small and faint, averted vision is necessary. It is coarse, and a 9m orange star to the SE is tough on the view. Model (where the Sun is a baseball): Its diameter would be 1,970 miles with stars 524 miles apart. Distance (LY): 4,460 Luminosity (suns): 430 PK 19-4.1 Other Names: M1-60 Rating: 5 D Position: 1844-1345 Type: Pn Class: 1 Magnitude: 12.3 Observations: C8 at 104x. Extremely low surface brightness; featureless and very difficult. C11 at 98x. Moderate size with a central star and a faint star involved on the W side. (Okie-Tex Star Party, 2003) Distance (LY): 11,900 Total luminosity (Suns): 133 PK 19-4.1 Planetary nebula Observed with C11 on 9/25/03 Magnification: 98x Okie-Tex Star Party - 39 - Zone 220 Zone 220 Mini-Catalog Double Stars Designation Position Rating Map STF 2313 1825-0636 2E 1 STF 2337 1835-1442 2E 4 Barton 479 1830-0522 3E 1 STF 2325 1832-0922 3E 3 STF 2373 1846-1030 3E 4 STF 2391 rej 1849-0600 3E 3 Bos 2856 1809-0817 4E 1 Fox 231 1831-1456 4E 4 Bur 247 1832-0922 4E 3 STF 2388 rej 1849-0828 4E 3 H VI 50 1850-0555 4E 3 STF 2405 rej 1852-0716 4E 3 Glasenapp 14 1852-0618 4E 3 A 1889 1853-1121 4E 4 Hussey 191 1800-1346 5E 2 A 36 1812-0718 5E 1 Leonard 20 1837-1357 5E 4 STF 2350 rej 1840-0747 5E 3 Hipparcos 2654 1845-0737 5E 3 Bur 969 1851-0754 5E 3 Component A B A B A B A B A B A B A B A B A B A B C BC A B C A B C A B A B A B A B A B C A B A B C A B C - 40 - Mag 7.18 8.72 8.14 9.05 10.02 10.21 5.77 9.47 6.95 8.21 6.50 9.59 9.69 10.80 7.87 9.55 7.91 10.93 7.79 9.90 10.00 6.15 12.30 8.23 8.00 11.40 10.80 10.85 11.40 8.30 10.89 10.43 10.91 7.72 11.47 10.18 10.90 10.97 5.84 10.90 8.39 12.30 10.53 6.82 11.90 12.50 Separation — 6.0 — 16.6 — 5.5 + — 12.4 = — 4.1 — 38.1 + — 11.8 — 8.8 + — 7.9 + — 54.1 - PA — 196 — 297 = — 281 +? — 257 — 337 — 333 = — 124 — 190 + — 167 = — 345 + 21.4 = — 23.5 + 111.8 — 13.9 25.2 + — 7.2 — 61.6 — 4.2 — 69.2 + — 4.1 + 24.4 — 19.4 — 2.1 13.8 — 14.4 + 44.1 19= — 359 + 111.8 — 115 25.2 + — 23 + — 32 + — 120 — 40 — 257 24.4 — 195 = — 73 + 13.8 — 239 + 44.1 Zone 220 Designation Jonckheere 2680 Position Rating Map 1853-0627 5E 3 Jonckheere 2241 1856-0552 5E 3 h5503 1857-1451 5E 4 Hussey 61 1820-1447 3M 2 Rossiter 4594 1842-0903 3M 3 h857 Hipparcos 2664 Hipparcos 2579 1817-0717 4M 1 1847-1113 4M 4 1816-1111 5M 2 Barton 2755 1838-1111 5M 4 Bur 135 1838-1400 5M 4 Jonckheere 2156 1857-0826 5M 3 Tau Oph 1803-0811 3D 1 Bur 419 1832-0750 3D 3 STF 2303 1820-0759 5D 1 Bur 967 1841-1430 5D 4 Component A B A B C BC A B A B A B C D A B A B A B A B A B C D E A B C BC A B C A B A B A B C - 41 - Mag 9.17 10.59 10.35 10.93 11.80 7.15 11.76 9.76 10.64 4.70 12.20 10.56 10.50 8.36 13.05 8.77 10.74 7.73 11.90 10.34 10.40 6.58 10.50 14.70 10.47 11.49 7.75 11.76 12.20 4.80 5.94 11.28 8.38 9.42 6.69 9.41 7.97 11.50 12.59 Separation — 80.0 — 20.0 PA — 320 — 215 4.0 + — 37.7 — 2.4 = — 15.2 52.2 110.1 — 21.2 — 6.8 — 8.4 — 3.7 +! — 2.0 20.0 121 = 128 — 52.4 - 259 — 79 = — 117 = — 47 + 52.2 110.1 — 20 — 38 + — 113 — 129 — 173 20.0 121 = 118 — 1+ 4.6 + — 1.7 + 99.8 — 1.1 — 1.6 -! — 2.4 = 60.0 +! 307 — 282 +!! 99.8 — 34 -! — 240 +! — 195 = 60.0 +! Zone 220 Deep Space Objects Object NGC 6705 NGC 6611 NGC 6694 NGC 6604 PK 19-5.1 NGC 6664 IC 1287 NGC 6704 NGC 6712 H 19 NGC 6605 PK 21-1.1 Basel 1 PK 21-5.1 PK 27-3.2 IC 1295 NGC 6574 NGC 6649 NGC 6683 NGC 6517 NGC 6539 NGC 6631 PK 23-2.1 PK 19-4.1 Position 1851-0616 1819-1347 1845-0924 1818-1214 1846-1428 1837-0813 1831-1050 1851-0512 1853-0842 1817-1320 1817-1458 1834-1107 1848-0551 1852-1311 1854-0626 1855-0850 1812-1459 1834-1024 1842-0617 1802-0858 1805-0735 1827-1202 1843-0905 1844-1345 Rating 1E 2E 2E 3E 3E 4E 3M 3M 3M 4M 4M 4M 4M 4M 5M 5M D 3D 4D 5D 5D 5D 5D 5D Map 3 2 3 2 4 3 4 3 3 2 2 4 3 4 3 3 2 4 3 1 1 2 3 4 Specifications Surface Type Mag Br Oc (I 2r) 5.8 Oc (II 3mn) 6.5 Oc (II 3m) 8.0 Oc (I 3mn) 6.5 Pn (1) 12.5 Oc (III 2m) 7.8 Gn (4) — Oc (I 2m) 9.5 Gc (9) 9.0 Oc 10.0 Oc 6.0 Pn (3) 13.0 Oc (I 2 m) 8.9 Pn (2) 13.2 Pn (1) 13.4 Pn (3b) 15.0 Gal (SAB(rs)bc:II-III) 12.0 12.3 Oc (I 3m) 8.9 Oc (I 2 pn) 9.4 Gc (4) 12.0 Gc (10) 12.0 Oc (II 2m) 11.7 Pn (2) 12.4 Pn (1) 12.3 - 42 - Population 870 100 30 30 50 60 40 15 50 30