Zone 13, Master Map Normal View h2166 h2165 +74°00' h2179 SAO 4840 h2193 IC 356 h1140 OS 50 h2168 +70°00' h2164 STF 428 rej h1139 h1136 h1129 h1127 STF 419 h1133 STF 455 h1141 +69°00' STF 496 rej STF 506 STF 421 Gamma Cam γ +71°00' 13-1 STF 472 NGC 1485 +72°00' h2157 STF 312 STF 317 NGC 1469 +68°00' Kuiper 13 STF 368 h1138 IC 342 Camelopardalis +67°00' h1131 OS 54 STF 374 Hussey 1056 h1132 P Muller 391 Berkeley 10 A. G. 71 13-2 Bur 1231 Milburn 392 P Muller 122 OS 52 Bpm 43 Stein 418 Stein 471 Milburn 254 Ball 9 Stein 422 Milburn 256 04h 00m 03h 48m OSS 36 03h 36m Stein 460 03h 24m Stein 409 STF 335 STF 349 03h 12m 03h 00m +65°00' LDS 1577 +73°00' h2173 Vilkki 11 +66°00' STF 418 +75°00' Zone Master, Norm al View, 10 deg FOV Zone 13, Map 1 Normal Image Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. +76°00' STF 474 h2166 +75°00' STF 418 h2165 h2179 +74°00' SAO 4840 h2173 Vilkki 11 +73°00' LDS 1577 +72°00' h2193 STF 472 STF 421 h2168 Gamma Cam +71°00' γ OS 50 NGC 1485 h2164 h1129 h1136 h1140 +70°00' STF 428 rej h1139 STF 419 h1133 +69°00' STF 455 NGC 1469 04h 00m Kuiper 13 03h 48m h1138 STF 368 03h 36m 03h 24m 03h 12m 03h 00m Zone 13, Map 1 Mirror Image +76°00' Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. +75°00' h2166 h2165 STF 418 +74°00' h2179 SAO 4840 h2173 Vilkki 11 STF 312 +72°00' h2157 +73°00' LDS 1577 h2193 γ h2164 Gamma Cam +71°00' STF 421 OS 50 h2168 h1129 +70°00' STF 428 rej h1139 h1136 STF 419 h1133 +69°00' STF 317 Kuiper 13 STF 368 03h 00m 03h 12m 03h 24m 03h 36m h1138 03h 48m 04h 00m Zone 13, Map 2 Normal Image Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. +70°00' h2164 STF 428 rej h1139 h1129 h1136 STF 419 STF 317 +69°00' h1133 Kuiper 13 +68°00' STF 368 h1138 Camelopardalis IC 342 h1131 OS 54 +67°00' STF 374 Hussey 1056 h1132 P Muller 391 Berkeley 10 +66°00' Milburn 392 A. G. 71 Bur 1231 P Muller 122 OS 52 Bpm 43 +65°00' Stein 418 Stein 471 Stein 422 OSS 36 Stein 460 STF 349 STF 402 rej Espin 1881 Hussey 1063 03h 48m 03h 36m STF 335 Trumpler 3 P Muller 37 03h 24m 03h 12m 03h 00m +64°00' Milburn 254 Zone 13, Map 2 Mirror Image Sky charts generated by TheSky Software; used by permission of Software Bisque Inc. h1129 +70°00' STF 428 rej h1139 h2164 h1136 STF 419 +69°00' h1133 STF 317 Kuiper 13 STF 368 Camelopardalis IC 342 +68°00' h1138 h1131 OS 54 +67°00' STF 374 Hussey 1056 h1132 A. G. 71 Bur 1231 P Muller 122 OS 52 +66°00' P Muller 391 Berkeley 10 Milburn 392 Bpm 43 +65°00' Stein 418 Stein 471 Ball 9 +64°00' Milburn 254 Stein 422 Stein 409 Stein 460 STF 335 OSS 36 STF 349 STF 402 rej Trumpler 3 Espin 1881 P Muller 37 03h 00m 03h 12m 03h 24m 03h 36m 03h 48m Zone 13 Index 1 Reference Star; 32 Double Stars; 1 Open Cluster; 1 Galaxy A L A. G. 71.................................................... 15 LDS 1577................................................... 4 B M Berkeley 10 ............................................. 22 Bpm 43 ..................................................... 19 Bur 1231 .................................................. 14 Milburn 392 ............................................. 16 O Gamma Cam............................................ 11 OS 50........................................................ 10 OS 52........................................................ 18 OS 54........................................................ 14 H P h1129 .......................................................... 3 h1131 ........................................................ 17 h1132 ........................................................ 12 h1133 .......................................................... 8 h1136 .......................................................... 8 h1138 .......................................................... 4 h1139 .......................................................... 5 h2164 .......................................................... 2 h2168 .......................................................... 3 h2173 .......................................................... 7 Hussey 1056 ............................................ 18 P Muller 122............................................ 17 P Muller 391............................................ 21 G S I SAO 4840 .................................................. 2 Stein 418 .................................................. 16 Stein 471 .................................................. 17 STF 368 ................................................... 20 STF 374 ................................................... 13 STF 419 ..................................................... 9 STF 421 ..................................................... 9 STF 428 rej ................................................ 5 STF 455 ..................................................... 6 IC 342....................................................... 22 V K Vilkki 11 .................................................... 6 Kuiper 13 ................................................. 15 -1- Zone 13 Zone 13, Map 1 Reference Star SAO 4840 Other name(s): HD 19275; SAO 4840 Rating: na Position: 0312+7423 A Magnitude 4.84 Distance (LY): 162 Separation PA — — Year — Spectra A2 Vn Colors W Total luminosity (Suns): 25 Double Stars Easy h2164 Other name(s): ADS 2291; HD 18576 Rating: 4 E Position: 0304+7039 A B Magnitude 8.58 10.82 Separation PA — — 5.4 + 320 = Year — 1993 Notes: 1830: 4.5 @ 320. 10 measurements. Observations: C11 at 115x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.34 inches. Separation: AB = 6.57 miles. Distance (LY): 780 Total luminosity (Suns): 19.8 -2- Spectra A0 Colors W L? Zone 13 h1129 Rating: 5 E Position: 0305+7012 A B Magnitude 9.75 10.08 Separation PA — — 44.6 348 - Year — 1991 Spectra A5 Colors W W Notes: 1897: 46.6 @ 349. 8 measurements. Hipparcos gives discordant distances-- 700 light years to A, 231 to B. Observations: C11 at 115x. h2168 Other name(s): SAO 4830 Rating: 5 E Position: 0308+7125 A B Magnitude 9.39 11.29 Separation PA — — 18.3 + 296 + Year — 1991 Spectra K0 Colors W ? Notes: 1893: 17.1 @ 293. 4 measurements. Hipparcos/Tycho mission data show different distances for these stars (480 and 40 light years); they may be optical. Observations: C8 at 104x. B looks more like 12.5m. -3- Zone 13 LDS 1577 Other name(s): HD 22500; SAO 4966 Rating: 5 E Position: 0343+7324 A B Magnitude 8.61 10.59 Separation PA — — 72.7 240 + Year — 1991 Spectra F8 Colors W ? Notes: 1896: 73.0 @ 239. 4 measurements. Observations: C8 at 104x. Faint but rich field. Scale model (in which the Sun is the size of a baseball): Diameter: A = 13.4 inches. Separation: AB = 70.3 miles. Distance (LY): 620 Total luminosity (Suns): 12 h1138 Rating: 5 E Position: 0345+6822 A B Magnitude 9.99 11.90 Separation PA — — 11.6 + 332 + Year — 1971 Notes: 1909: 10.6 @ 330. 2 measurements. Observations: C11 at 115x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.84 inches. Separation: AB = 1.62 miles. Distance (LY): 90 Total luminosity (Suns): 0.075 -4- Spectra A0 Colors W ? Zone 13 STF 428 rej Other name(s): HD 23101; SAO 4991 Rating: 5 E Position: 0348+7033 Magnitude A 8.90 B 11.10 Aa 13.50 Separation — 25.3 21.5 PA — 144 + 173 Year — 1985 1904 Spectra A2 V? Colors W ? No Notes: AB 1892: 26.5 @ 143. 5 measurements. Aa 1 measurement. Observations: C8 at 104x. A 6m star lies to the N. Scale model (in which the Sun is the size of a baseball): Diameter: A = 5.96 inches. Separation: AB = 37.5 miles; Aa = 31.9 miles. Distance (LY): 950 Total luminosity (Suns): 23 h1139 Other name(s): HD 23602; SAO 5015 Rating: 3 E Position: 0352+7030 A B Magnitude 7.49 9.61 Separation PA — — 47.2 177 = Year — 1991 Spectra A3 Colors yW B Notes: 1892: 47.4 @ 177. 9 measurements. Hipparcos/Tycho mission data show different distances for these stars (441 and 1,120 light years); they may be optical. The stars have a small difference in proper motion. Observations: C8 at 104x. -5- Zone 13 STF 455 Other name(s): ADS 2851; HD 24297; SAO 12964 Rating: 4 E Position: 0357+6931 A B C D Magnitude 8.42 9.21 14.00 12.40 Separation — 12.0 + 58.3 = 96.3 PA — 167 = 332 = 211 Year — 1991 1910 1909 Spectra G5 IV? Colors oW W? No ? Notes: AB 1827: 11.9 @ 167. 19 measurements. The stars show similar proper motions. AC 1 measurement. AD 1 measurement. Observations: C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 16.1 inches. Separation: AB = 13.1 miles; AC = 63.7 miles; AD = 105 miles. Distance (LY): 700 Total luminosity (Suns): 30.42 Moderate Vilkki 11 Rating: 5 M Position: 0315+7340 A B Magnitude 11.09 11.60 Separation PA — — 7.0 21 Year — 1986 -6- Spectra Colors ? ? Zone 13 Notes: 1 measurement. Observations: C11 at 115x. It lies 7 min S of an 8m star. Distance (LY): 487 Total luminosity (Suns): 1.10 h2173 Other name(s): HD 19615; SAO 4858 Rating: 5 M Position: 0315+7352 A B Magnitude 6.57 12.40 Separation PA — — 47.0 163 Year — 1904 Spectra K0 Colors O! ? Notes: 1 measurement. Observations: C8 at 104x. It is the W vertex of a large 7m triangle. I needed averted vision to pick up B. Scale model (in which the Sun is the size of a baseball): Diameter: A = 22.0 inches. Separation: AB = 57.2 miles. Distance (LY): 780 Total luminosity (Suns): 111 -7- Zone 13 h1133 Other name(s): ADS 2455; HD 20273; SAO 12703 Rating: 5 M Position: 0320+6944 A B Magnitude 6.60 12.66 Separation PA — — 30.6 = 204 + Year — 1909 Spectra B9.5 IV Colors W ? Notes: 1896: 30.6 @ 203. 5 measurements. Observations: C11 at 115x. Use averted vision to pick up B. Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.0 inches. Separation: AB = 31.0 miles. Distance (LY): 650 Total luminosity (Suns): 76.2 h1136 Rating: 5 M Position: 0336+7012 A B Magnitude 10.82 12.33 Separation PA — — 11.8 221 + Year — 1991 Notes: 1893: 12.2 @ 219. 4 measurements. Observations: C11 at 115x. Distance (LY): 160 Total luminosity (Suns): 0.117 -8- Spectra Colors W bW Zone 13 STF 419 Other name(s): ADS 2678; HD 22553; SAO 12872 Rating: 3 M Position: 0343+6951 A B C BC Magnitude 7.90 7.90 9.12 Separation PA — — 2.9 74 + 0.4 = : 112 - Year — 1998 1991 1991 Spectra A2 IV A3 IV? Colors W W No Notes: AB 1828: 3.1 @ 73. 37 measurements. BC 1894: 0.4 @ 167. 8 measurements. Observations: C8 at 280x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 5.62 inches; B = 5.62 inches. Separation: AB = 3.98 miles; BC = 2,899 feet. Distance (LY): 880 Total luminosity (Suns): 142 STF 421 Other name(s): ADS 2718; HD 22912; SAO 4984 Rating: 5 M Position: 0346+7137 A B Magnitude 6.97 10.63 Separation PA — — 12.5 + 236 + Year — 1991 Spectra G5 III Colors Y W Notes: 1829: 12.4 @ 235. 10 measurements. The stars have different proper motions. Observations: C8 at 206x. -9- Zone 13 Scale model (in which the Sun is the size of a baseball): Diameter: A = 14.7 inches. Separation: AB = 9.52 miles. Distance (LY): 488 Total luminosity (Suns): 31 Difficult OS 50 Other name(s): ADS 2377; HD 19475; SAO 4846 Rating: 3 D Position: 0313+7134 A B C Magnitude 7.64 8.54 13.2 Separation — 1.0 + 27.2 + PA — 159 299 + Year — 1998 1931 Spectra F8 V Colors W W No Notes: AB 1843: 0.9 @ 236. 99 measurements. The orbital period has been computed to be 344.9 years (Popovic, 1972). AC 1900: 27 @ 296. 2 measurements. Observations: C8 at 280x. Notched. Scale model (in which the Sun is the size of a baseball): Diameter: A = 5.4 inches. Separation: AB = 1,310 feet; AC = 6.7 miles. Distance (LY): 159 Total luminosity (Suns): 2.7 - 10 - Zone 13 Gamma Cam Other name(s): Seginus; h2200; HD 23401; SAO 5006 Rating: 4 D Position: 0350+7120 A B C Magnitude 4.63 13.20 9.07 Separation — 56.2 + 106.0 - PA — 240 85 - Year — 1909 1991 Spectra A0 IV Colors yW ? W Notes: AB 1904: 56.1 @ 241. 2 measurements. AC 1892: 106.1 @ 86. 10 measurements. This star has a fairly high rotational velocity (189 kps). James Kaler's Star Notes: At first, Seginus seems to be yet another boring white class A (A7) star (only boring of course because there are so many of them!). It has a number of things to recommend it, however. First, unlike the class A stars of the Big Dipper, it is a giant. Class A giants are different from the cool giants, not as large. They are stars that are just now beginning their destinies with the "real" giants (those cool ones of classes K and M that really are large), and are just now starting to swell. Its surface temperature is 7,600 Kelvin, and radius only about 3.5 times solar (hardly "giant" status). Not only is Seginus also still a rapid rotator (giants slow down as they expand), spinning at least 139 kilometers per second, but it is also variable, of a class known as a "Delta Scuti" star. These are all dwarfs and giants of classes A and cooler F that chatter away in brightness by a few percent as a result of their internal constructions. Seginus varies by around 5 percent, pulsating over a period of about 7 hours. It is also been found to be a "non- radial" pulsator over a much shorter period, some parts of the star moving outward while others move inward. Seginus has a visible 12th magnitude "companion" about half a minute of arc away from it, but the little star fools us in being only accidentally in the line of sight. "Speckle" observations, however (in which the astronomer compiles myriad short exposures to overcome twinkling), reveal that Seginus really does have a companion only 0.07 seconds of arc distant from it (which corresponds to 1.8 astronomical units, a bit farther than Mars is from the Sun). Nothing whatever is known about the little star. With a mass of around 2.5 times that of the Sun, Seginus has recently shut down core hydrogen fusion (or at least it will very soon), and is roughly what the brighter Dipper stars will become when they begin to die. Oddly, it is surrounded by a small cloud of dust visible only through its infrared radiation. Why it should exist is a mystery. - 11 - Zone 13 Observations: C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.0 inches. Separation: AB = 7.45 miles; AC = 14.0 miles. Distance (LY): 85 Total luminosity (Suns): 34 Zone 13, Map 2 Double Stars Easy h1132 Other name(s): ADS 2391 Rating: 2 E Position: 0315+6702 A B Magnitude 9.74 9.86 Separation PA — — 7.2 + 25 + Year — 1991 Spectra Notes: 1893: 6.8 @ 21. 8 measurements. Hipparcos gives discordant distances-- 800 light years for A, 185 for B. Observations: C11 at 115x. - 12 - Colors W W Zone 13 STF 374 Other name(s): ADS 2494; HD 20711 Rating: 2 E Position: 0324+6728 A B Magnitude 7.74 9.10 Separation PA — — 11.4 + 296 + Year — 1996 Spectra F8 Colors W W Notes: 1831: 10.8 @ 295. 21 measurements. Hipparcos gives discordant distances-- 520 and 585 light years. Different proper motions. Observations: C11 at 115x. Σ374 Observed with C11 on 11/19/03 Magnification: 98x - 13 - Zone 13 OS 54 Other name(s): ADS 2576; HD 21476; SAO 12792 Rating: 3 E Position: 0332+6735 A B C Magnitude 7.65 9.36 Separation — 22.6 99.1 + PA — 0+ 114 = Year — 1991 1985 Spectra F0 IV Colors W R No Notes: AB 1843: 25.3 @ 354. 22 measurements. The stars show similar proper motions. AC 1893: 96.5 @ 114. 4 measurements. Observations: C8 at 104x. Dembowski saw them as Y and G. A nice triangle of 7.5m stars lies 10 min S. Very rich field. Scale model (in which the Sun is the size of a baseball): Diameter: A = 18.5 inches. Separation: AB = 19.4 miles; AC = 85.0 miles. Distance (LY): 550 Total luminosity (Suns): 24 Bur 1231 Other name(s): ADS 2698; HD 22776; SAO 12881 Rating: 4 E Position: 0344+6559 A B C Magnitude 7.81 12.40 8.69 Separation — 2.6 = 87.1 + PA — 2259 + Year — 1985 1991 Spectra F0 A3 Colors W No W Notes: AB 1891: 2.6 @ 15. 6 measurements. AC 1891: 84 @ 252. 12 measurements. May be optical because Hipparcos gives different distances (201 and 786 light years). - 14 - Zone 13 Observations: C8 at 104x. A 12m star is 100" @ 210. A. G. 71 Other name(s): ADS 2719 Rating: 4 E Position: 0346+6606 A B Magnitude 10.33 10.54 Separation PA — — 8.0 = 242 = Year — 1926 Spectra Colors W W Notes: 1891: 8.0 @ 242. 7 measurements. Observations: C11 at 115x. This pair forms one vertex of a diamond of 10m and 11m stars. Distance (LY): 78 Total luminosity (Suns): 0.06 Kuiper 13 Other name(s): HD 23189 Rating: 3 E Position: 0348+6840 A B Magnitude 9.17 9.41 Separation PA — — 17.2 + 14 - Year — 1991 Spectra M0 Colors yO bW Notes: 1934: 17.0 @ 16. 26 measurements. Physical; orbit calculated. The stars share common proper motion. Observations: C11 at 115x. - 15 - Zone 13 Scale model (in which the Sun is the size of a baseball): Diameter: A = 5.2 inches. Separation: AB = 1.50 miles. Distance (LY): 57 Total luminosity (Suns): 0.102 Moderate Stein 418 Other name(s): SAO 12560 Rating: 5 M Position: 0301+6524 A B Magnitude 10.14 11.02 Separation PA — — 8.9 + 68 + Year — 1991 Spectra Colors W W Notes: 1893: 7.7 @ 64. 4 measurements. Observations: C11 at 115x. Distance (LY): 89 Total luminosity (Suns): 0.079 Milburn 392 Other name(s): ADS 2266; SAO 12561 Rating: 5 M Position: 0301+6635 A B Magnitude 9.77 10.50 Separation PA — — 6.9 25 Notes: 1 measurement. Observations: C11 at 115x. - 16 - Year — 1925 Spectra G0 Colors yW bW Zone 13 P Muller 122 Rating: 4 M Position: 0301+6548 A B Magnitude 9.99 10.60 Separation PA — — 6.2 331 + Year — 1989 Spectra G5 Colors yW W Notes: 1971: 6.6 @ 329. 4 measurements. Observations: C11 at 115x. h1131 Rating: 4 M Position: 0307+6744 A B Magnitude 9.74 11.74 Separation PA — — 18.5 + 120 - Year — 1991 Spectra B8 Colors W W Notes: 1908: 18.2 @ 121. 4 measurements. Observations: C11 at 115x. Stein 471 Rating: 5 M Position: 0339+6513 A B Magnitude 10.99 11.10 Separation PA — — 12.6 281 - 17 - Year — 1908 Spectra Colors ? ? Zone 13 Notes: 1 measurement. Observations: C11 at 115x. It lies in an arc of four 11m stars. Difficult OS 52 Other name(s): ADS 2436; HD 20104 Rating: 5 D Position: 0318+6540 A B C Magnitude 6.41 6.87 12.70 Separation — 0.5 + 80.5 PA — 63 -! 223 Year — 1999 1912 Spectra A2 V Colors W ? ? Notes: AB 1843: 0.4 @ 157. 99 measurements. A premature orbit has been calculated. AC 1 measurement. Observations: C11 at 115x. At 634x, AB was a peanut. C was difficult. Scale model (in which the Sun is the size of a baseball): Diameter: A = 17.5 inches. Separation: AB = 2,472 feet; AC = 75.0 miles. Distance (LY): 600 Total luminosity (Suns): 127 Hussey 1056 Other name(s): ADS 2452 Rating: 2 D Position: 0320+6714 A B Magnitude 8.00 8.14 Separation PA — — 1.1 + 264 - 18 - Year — 1998 Spectra F8 V Colors W W Zone 13 Notes: 1904: 0.6 @ 282. 24 measurements. Observations: C11 at 339x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 6.50 inches. Separation: AB = 2,048 feet. Distance (LY): 226 Total luminosity (Suns): 4.7 Bpm 43 Other name(s): BK Cam; HD 20336 Rating: 5 D Position: 0320+6539 A B Magnitude 4.84 12.41 Separation PA — — 120.9 58 = Year — 1959 Spectra B2.5 Vne Colors W ? Notes: 1911: 121.5 @ 58. 2 measurements. The primary is a shell star, with light and spectrum variable. It may also be a longperiod spectroscopic binary. Observations: C11 at 115x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.60 inches. Separation: AB = 151 miles. Distance (LY): 800 Total luminosity (Suns): 581 - 19 - Zone 13 STF 368 Other name(s): ADS 2468; SAO 12715 Rating: 3 D Position: 0322+6830 A B C Magnitude 9.27 9.36 13.33 Separation — 2.0 64.9 - PA — 338 -? 37 = Year — 1998 1925 Notes: AB 1831: 2.3 @ 162. 21 measurements. Quadrant reversal? AC 1911: 66.0 @ 37. 2 measurements. Observations: C11 at 339x. Scale model (in which the Sun is the size of a baseball): Diameter: A = 12.4 inches. Separation: AB = 1.65 miles; AC = 53.7 miles. Distance (LY): 530 Total luminosity (Suns): 8.4 See sketch, next page. - 20 - Spectra F8 IV Colors W W No Zone 13 Σ368 Observed with C11 on 11/19/03 Magnification: 654x P Muller 391 Other name(s): SAO 12842 Rating: 3 D Position: 0339+6640 A B Magnitude 9.46 10.32 Separation PA — — 2.3 + 224 + Notes: 1896: 2.2 @ 219. 7 measurements. Observations: C11 at 339x. - 21 - Year — 1991 Spectra K5 Colors yO W Zone 13 Deep Sky Objects Difficult Berkeley 10 Rating: 5 D Position: 0339+6632 Type : Oc Dimensions: 12.0' Class: II 3p Cluster population: 50 Magnitude : 12.0 Notes: The brightest star is 14.0m. Observations: C8 at 104x. With averted vision, something is there, but no stars were resolved. IC 342 Other Names: UGC 2847 Rating: 5 D Position: 0347+6806 Type : Gal Surface brightness: 15.0 Class: SBc Dimensions: 18' x 17' Magnitude : 9.1 Notes: IC 342 was discovered in 1895 by W.F. Denning. Edwin P. Hubble suspected it to be a member of the Local Group, but later observations showed that it is at a distance of at least about 6, perhaps more probably 10 million light-years. IC 342 lies at low galactic latitude, only 10.5 degrees from the Galactic Equator, or the Milky Way's disc plane. Therefore, it is heavily obscured by interstellar matter of the Milky Way; recent estimates give an extinction of about 2.4 magnitudes; without this extinction, this galaxy would be among the brightest in the sky, and certainly have been discovered much earlier. IC 342 forms a group with some large and many dwarf galaxies, the so-called Maffei 1 group, or IC 342 group, or somtimes called IC 342/Maffei group. It is one of two dominating members of that group, the other being elliptical galaxy Maffei 1, which is even more obscurred and was thus only discovered in 1968. - 22 - Zone 13 [Source: http://www.seds.org/~spider/spider/LG/i0342.html] Observations: C8 at 104x. The view I saw was of a large hazy area with several stars superimposed over it. A 13m star lies just NW of it. A straight line of 5 or 6 very faint stars lies SW. Model (where the Sun is a baseball): It would have a diameter of 13 million miles. Distance (LY): 8,000,000 Luminosity (suns): 1,150,000,000 Radial velocity (km/sec): +176 - 23 - Zone 13 Zone 13 Mini-Catalog Double Stars Star Designation Position Rating Map h1132 0315+6702 2E 2 STF 374 0324+6728 2E 2 OS 54 0332+6735 3E 2 Kuiper 13 0348+6840 3E 2 h1139 0352+7030 3E 1 h2164 0304+7039 4E 1 Bur 1231 0344+6559 4E 2 A. G. 71 0346+6606 4E 2 STF 455 0357+6931 4E 1 h1129 0305+7012 5E 1 h2168 0308+7125 5E 1 LDS 1577 0343+7324 5E 1 h1138 0345+6822 5E 1 STF 428 rej 0348+7033 5E 1 STF 419 0343+6951 3M 1 P Muller 122 0301+6548 4M 2 h1131 0307+6744 4M 2 Stein 418 0301+6524 5M 2 Milburn 392 0301+6635 5M 2 h2173 0315+7352 5M 1 Component A B A B A B A B A B A B A B C A B A B C D A B A B A B A B A B a A B C BC A B A B A B A B A B - 24 - Specifications Mag Sep from A 9.74 — 9.86 7.2 + 7.74 — 9.10 11.4 + 7.65 — 9.36 22.6 9.17 — 9.41 17.2 + 7.49 — 9.61 47.2 8.58 — 10.82 5.4 + 7.81 — 12.40 2.6 = 8.69 87.1 + 10.33 — 10.54 8.0 = 8.42 — 9.21 12.0 + 14.00 58.3 = 12.40 96.3 9.75 — 10.08 44.6 9.39 — 11.29 18.3 + 8.61 — 10.59 72.7 9.99 — 11.90 11.6 + 8.90 — 11.10 25.3 13.50 21.5 7.90 — 7.90 2.9 9.12 0.4 = 9.99 — 10.60 6.2 9.74 — 11.74 18.5 + 10.14 — 11.02 8.9 + 9.77 — 10.50 6.9 6.57 — 12.40 47.0 PA from A — 25 + — 296 + — 0+ — 14 — 177 = — 320 = — 287.1 + — 242 = — 167 = 58.3 = 96.3 — 348 — 296 + — 240 + — 332 + — 144 + 173 — 74 + 112 — 331 + — 120 — 68 + — 25 — 163 Zone 13 Star Designation Position Rating Map Vilkki 11 0315+7340 5M 1 h1133 0320+6944 5M 1 h1136 0336+7012 5M 1 Stein 471 0339+6513 5M 2 STF 421 0346+7137 5M 1 Hussey 1056 0320+6714 2D 2 OS 50 0313+7134 3D 1 STF 368 0322+6830 3D 2 P Muller 391 0339+6640 3D 2 Gamma Cam 0350+7120 4D 1 OS 52 0318+6540 5D 2 Bpm 43 0320+6539 5D 2 Component A B A B A B A B A B A B A B C A B C A B A B C A B C A B Specifications Mag Sep from A 11.09 — 11.60 7.0 6.60 — 12.66 30.6 = 10.82 — 12.33 11.8 10.99 — 11.10 12.6 6.97 — 10.63 12.5 + 8.00 — 8.14 1.1 + 7.64 — 8.54 1.0 + 13.20 27.2 + 9.27 — 9.36 2.0 13.33 64.9 9.46 — 10.32 2.3 + 4.63 — 13.20 56.2 + 9.07 106.0 6.41 — 6.87 0.5 + 12.70 80.5 4.84 — 12.41 120.9 - PA from A — 21 — 204 + — 221 + — 281 — 236 + — 264 — 159 27.2 + — 338 -? 64.9 — 224 + — 240 106.0 — 63 -! 80.5 — 58 = Deep Sky Objects Object Berkeley 10 IC 342 Position 0339+6632 0347+6806 Rating 5D 5D Zone Submap 2 2 Type Oc (II 3p) Gal (SBc) - 25 - Specifications Mag Surface Br 12.0 9.1 15.0 Population 50