High Proper Motion Star
While comparing an image of Comet 2001 A2 LINEAR taken at Stony Ridge
on July 15, 2001 with the same field taken at Palomar for the Sky Survey
in 1954, I noticed one star had moved during that period. The star's
apparent high proper motion indicates that it is a "nearby"
star to our Solar System. -- Steve Brewster
<< Copyright (c) 1994, Association of Universities
for Research in Astronomy, Inc. All rights reserved.
Date August 7, 1954
Image made at Stony Ridge Observatory, July 15, 2001 of Comet 2001 A2
High Proper-motion Star (epoch 2000.0)
22h 17m 24.63s
+15d 12' 06.6"
The Gliese Catalog of Nearby Stars is a compilation of all known stars
within about 25 parsecs (81.5 light-years) of the Sun. These stars are
distinguished from the billions of others by their high proper motions
and large stellar parallax. Upon checking the catalog, I found one Gliese
star about 10 arc-minutes (2 image fields) north of the star indicated
above. Called Gliese 852.1, both stars appear to have about the same
proper motion and are moving in a parallel direction.
Questions arrise -
Is this a newly discovered high proper-motion star, not
Are these two stars related, i.e., do Gliese 852.1 and the star
iamged at Stony Ridge form a gravitaionally bound double star?
Or do they share only a common motion on the sky?
Further investigations will include more research of the literature
to determine the nature of Gliese 852.1 and the "new" star.
In addition, observations six months apart are needed to determine the
stellar parallax of the discovery star which can then be compared to
the stellar parallax of Gliese 852.1.
...to be continued.