Re: Molniya 3-3

From: Bart De Pontieu <BDP_at_MPE.MPE-GARCHING.MPG.DE>
Date: Tue, 14 Mar 1995 12:49:12 -0500
Jeff Brower wrote in seesat/215 :

>Time:  1995 Mar 5 0354 UT
>Object Location:  Passed within about 2 degrees of the Rosette Nebula, NGC 2237
>(RA06:30, Dec 04:40), Azimuth 210, Elevation 50 degrees, at 0354 UT
>Magnitude:  First flash 2nd magnitude, seen with the naked eye, east of
>Betelgeuse.  Binoculars confirmed object was not an aircraft.  Subsequent
>Period:  11 seconds plus or minus 1 sec
>Identification:  In retrospect, based on the following elset, Orbitrack Look
>calculation and Orbitrack StarPlot.  Nearly 4000 objects were screened, with
>this the only match for time and trajectory:
>75105  A
>1 08425U 75105  A 95062.15677405  .00000810  00000-0  44132-3 0  7774
>2 08425  61.8112  93.0691 7409631 273.1556  12.7798  2.00677298141413

This observation seems similar to the observations done in July and August
1991 (by some members of the BWGS) of a very slowly moving flasher with
a flash period (then) of 2.29 seconds. It was never identified though it
was dubbed the 'Molniya-flasher' at the time, because it was suspected a
Molniya was responsible for the flashes. Rainer, you've put so much time
and energy in trying to identify the Molniya-flasher 3 years ago, do you
think it's worth checking whether 75-105 A fits the observations? If the
flash period is a double period, the evolution of it (from 2.3 to 5.5 in
three years) is not completely impossible!

Cheers,
   Bart

PS : For readers of Flash that have big archives, some references to the
elusive Molniya-flasher :

Flash 48 (vol. 5), September 1991 : description of observations
Flash 51 (vol. 5), December 1991  : first orbital elements
Flash 55 (vol. 6), April 1992 : revised orbital elements
Flash 66 (vol. 7), Februray 1993 : revised orbital elements
Received on Tue Mar 14 1995 - 14:52:15 UTC

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