Explanation of the Graphics of the Meridian Transit Periods of Sirius
By Karl-Heinz Homann
DESCRIPTION OF THE FUNCTIONS:
The time-function on the horizontal x-axis is marked in ten-day intervals. The axis represents
'mean sidereal time' of 86164.0905382 seconds per day as a fundamental time-constant. The
vertical y-axis represents the daily positive and negative time deviation in seconds from mean
sidereal time, as determined by the meridian transit period of Sirius for the days indicated.
METHOD OF MEASUREMENT:
A basic transit instrument of 25x magnification is solidly mounted. The optic is permanently
aligned in a southwesterly direction. This type of alignment offers an optimal period of
observation with respect to Sirius throughout the year. The precise time reference signal used
to measure the transit intervals of Sirius is the UTC atomic-time radio signal from WWV Fort
Collins/Colorado.
ERROR ANALYSIS:
The following errors of measurement were taken into consideration: The so-called
observer's "personal error" of maximum ± 0.5 seconds between two successive meridian
transits of Sirius. In terms of overall accuracy this error is of course drastically reduced by longer
time intervals between two successive transits, e.g. ten-day intervals. As a matter of fact, a 6year period between two successive transits, in order to determine a mean sidereal day with
respect to Sirius makes such error almost negligible. Furthermore, any periodic and nonperiodic time fluctuations, regardless of their cause, are naturally included in the measurement.
Hence, absolutely no time corrections have been applied neither to the actual measurement of
the meridian transit periods, nor in calculating the mean sidereal day with respect to Sirius.
Errors due to factors like optical refraction, aberration, proper motion, geographical position,
continental drift, time-signal propagation delay, atmospheric conditions, etc were found to be
insignificant with respect to the above method of measurement.
ANALYSIS OF THE DATA:
A thorough analysis of the data would require a comparison with data obtained over the
same time periods by the International Earth Rotation Service, US Naval Observatory or NASA,
for example.
As graphic1, graphic2 and graphic3 show several major and minor fluctuations in sidereal
time have occurred over certain periods throughout the years 1989 to 2000. For instance, a
significant deviation from mean sidereal time occurred in the spring of 1989, when Sirius A,
Sirius B and the sun were in direct conjunction and earth was still in the perihelion section of its
orbit (see also diagram Solar system - Sirius system). Interesting is the fact that also a major
time deviation from the negative into the positive range occurred during this conjunction at the
end of February 1989. Furthermore, seemingly 'regular' fluctuations appear around March of
each year. Also, at the end of 1989 towards the beginning of 1990, as earth went through its
perihelion, significant positive deviations were observed. In the following years, around the
same period, only positive deviations occurred, although diminishing in magnitude.
On April 6, 1994 the transit instrument was aligned in a more westerly direction in order to
extend the observation period into the month of June. This presented a challenge, as the bright
light of the sun made Sirius almost invisible to the naked eye. However, I was able to detect
Sirius on the 21 of June as it went through the transit. This was only possible due to an
approximate pre-determination of its position by computation, based on the previous
measurements. These particular observations have shown that over a period from the
beginning of May to June 21, a daily positive deviation of Sirius from mean sidereal time
occurred by about 100ms per day on average.
Extended sidereal time-measurements from 6 April 1994 to 6 April 1996 revealed a total
negative time deviation of 1.6 seconds from tropical-sidereal time. According to 'precession'
this difference should be about 3.34 seconds per year. Hence a total negative deviation of
about 6.68 seconds was to be expected, but did not occur in reality.
The continuous measurement of 6 April 1994 to 5 April 2000 confirmed this fact
conclusively. In that period the total negative deviation of 'Sirius time' from the total mean
sidereal time accumulated to 4.1 seconds. This means about negative 0.68 s per year (!). Again,
according to 'precession' a negative time difference of 6 × 3.34 s or about 20 seconds should
have occurred, but did NOT occur with respect to Sirius!
As a matter of fact, the mean rotation period of the earth relative to Sirius is nearly identical
to the time interval of the mean sidereal day of 86164.09054 seconds.
Noteworthy is also the fact that very significant time fluctuation occurred each year during
the period of April through October over the years 1994 to 2000. Depending on the cloudy
conditions the observation period lasted usually around 195 to 200 days, with the exception of
1997 and 2000. The overall result was that only negative time deviations in the range of 7.08 to
10.34 seconds were observed in those periods, as the following calculations show:
Meridian Transits of Sirius for the periods of April to October - 1994 to 2006 *
Note: The actual time difference between the mean solar day of 86400 seconds and the
mean sidereal day of 86164.0905382 seconds is exactly 235.9094618 seconds per complete
rotation. Due to earth's orbital motion this difference accumulates in a complete revolution of
the earth to the time period of one complete solar day. Hence, the total number of earth's
rotations in one complete 360° period of revolution around the sun is expressed by the
following two equations:
86400 s ÷ 235.9094618 s = 366.24219878
365.24219878 × 86400 s = 366.24219878 × 86164.0905382 s
Definitions:
t1: the accumulated solar day/sidereal day time difference, as measured per period of
observation
n: the total number of Sirius transits that occurred per period of observation
t2: the actual yearly mean solar day/sidereal day time difference of 235.90946 s multiplied
by n
t3: [t1 - t2] total sidereal time difference per period of observation
1994:
Date -- local time of transit
06.04. -- 21h11'50''
18.10. -- 08h25'18"
t1: 45992 s
n: 195
t2: 46002.34 s
t3: -10.34 s
-----------------------1995:
06.04. -- 21h12'48"
19.10. -- 08h22'19.5"
t1: 46228.5 s
n: 196
t2: 46238.25 s
t3: -9.75 s
--------------------------1996:
14.04. -- 20h38'19"
26.10. -- 07h51'45"
t1: 45994 s
n: 195
t2: 46002.34 s
t3: -8.34 s
---------------------------1997:
22.04. -- 20h07'51"
01.12. -- 05h31'11.5"
t1: 52599.5 s
n: 223
t2: 52607.81 s
t3: -8.31 s
-------------------------1998:
05.04. -- 21h15'37"
22.10. -- 08h09'25"
t1: 47172 s
n: 200
t2: 47181.89 s
t3: -9.89 s
----------------------------1999:
05.04. -- 21h16'36.5"
19.10. -- 08h22'12"
t1: 46464.5 s
n: 197
t2: 46474.16 s
t3: -9.66 s
------------------------------2000:
05.04. -- 21h13'41"
31.10. -- 07h32'03"
t1: 49298 s
n: 209
t2: 49305.08 s
t3: -7.08 s
-----------------------------2001:
09.04. -- 20h58'59"
15.10. -- 08h35'59"
t1: 44580 s
n: 189
t2: 44586.89 s
t3: -6.89 s
-----------------------------2002:
10.04. -- 20h55'08"
11.10. -- 08h51'47"
t1: 43401s
n: 184
t2: 43407.34 s
t3: -6.34 s
-----------------------------2003:
06.04. -- 21h11'55"
15.10. -- 08h37'03"
t1: 45292 s
n: 192
t2: 45294.62 s
t3: -2.62 s
-----------------------------2004:
09.04. -- 20h57'08"
25.10. -- 07h54'55"
t1: 46933 s
n: 199
t2: 46945.98 s
t3: -12.98 s
-----------------------------2005:
10.04. -- 20h54'15"
11.10. -- 08h50'54"
t1: 43401s
n: 184
t2: 43407.34 s
t3: -6.34 s
-----------------------------2006:
23.04. -- 20h06'05"
31.12. -- 03h35'26"
t1: 59439 s
n: 252
t2: 59449.18 s
t3: -10.18 s
------------------------------
INTERPRETATION OF THE DATA:
Significant time deviations in earth's period of rotation, as measured with respect to Sirius
have occurred over certain months (e.g. in the spring of 1989, when Sirius A, Sirius B and the
sun were in direct conjunction). Some minor, but nevertheless distinct deviations appear at
regular yearly intervals (usually around March). Since these deviations occur annually, the
gravitational influence of the moon or perturbations caused by other planets in the solar
system can be excluded. Since such deviations from mean sidereal time CANNOT be caused by
an increase or decrease in the speed of earth's rotation, I suspect a combined 'gravitational'
effect of the sun and the Sirius system on the earth's axis of rotation. In my article "Some more
thoughts on gravitation" I have tried to describe how the Sirius system might be responsible for
a 'curvature in space' that can reach as far as to our solar system. As we know, the revolution of
Sirius B and Sirius A around their common center of gravity over a period of about 49 years
proceeds in an almost vertical plane relative to the planetary plane of our solar system. This
motion could cause a periodic fluctuation in the curvature of space, similar to an ocean where a
calm wind would create long-stretched waves. If a ship were to sail on such waves, its mast will
gently swing back and forth. Likewise, during the earth's orbit around the sun the axis of the
earth would 'oscillate' due to these periodic fluctuations of the space-curvature between sun
and Sirius. Although the speed of earth's rotation remains unchanged (!), a positive or negative
time-deviation from mean sidereal time can be measured, depending on the magnitude and
direction of the oscillation of the axis, the sidereal point of reference and the latitude on earth
from which the measurements are taken. As a matter of fact, the International Earth Rotation
Service observes significant daily variations in earth's sidereal rotation period.
It is also very important to remember that despite some major variations in earth's period of
rotation, the mean time interval of the sidereal year or earth's complete orbit period basically
remains constant.
Even more surprising is the observation that the mean time interval of the sidereal year, as
measured with respect to Sirius is nearly identical (by less than one second) to the time interval
of the tropical year. According to the theory of 'precession', a yearly time difference of about
1223 s is supposed to occur between a sidereal year and the tropical year.
The meridian transit measurements of Sirius have shown that neither a time difference of 6
× 1223 s, nor a difference of 6 × 3.34 s has occurred over the 6-year observation period from
April 1994 to April 2000.
These observations clearly indicate that the so-called 'precession of the earth' is NOT a
scientific fact, and that the Sirius system has a noticeable gravitational influence on our solar
system. Obviously, Newton's laws of gravitation cannot explain Einstein's universe. In that
respect, it requires further study to see if the 49 year cycle of the Sirius system can provide us
with an explanation of the large fluctuations and annual irregularities in earth's rate of rotation
that have also been observed around 1941 by experts at the US Naval Observatory.
Additional Comment:
Two other phenomena should be mentioned that took place during the conjunction of Sirius
A, Sirius B and the sun around the beginning of February to the end of March 1989, as the
function of the time deviation entered from the negative into the positive range (see graphic1).
During this time our outermost planet Pluto, whose revolution period of 248.421 years is
exactly 5.0004 to 1 in relation to the Sirius B - Sirius A's orbit period of 49.68 years, went
through the perihelion of its very eccentric orbit. On 23 March 1989 an 800 m long 'rock' came
in strikingly close proximity to our earth at a speed of about 70.000 km/h. Missing our earth by
only a few hours - thereby sparing us a gigantic catastrophe - it also went through its perihelion
between sun and Sirius. Thanks to astronomers, who discovered it as it already disappeared
again into the vastness of space, a major widespread panic was avoided. These celestial
phenomena are not subject to plain coincidence, but are lawful celestial mechanical events. In
fact, the Sirius system determines the second (empty) focus point, which is essential for the
elliptic orbits of these and other celestial bodies in our solar system. Keep in mind that even our
earth has its perihelion around January 2, as it passes through the conjunction of sun and Sirius
each year.