[vsnet-chat 4152] NSV5602 is a high proper motion M4 dwarf.

["Mati Morel" <morel@ozemail.com.au>]

----- Original Message -----
From: Mati Morel <morel@ozemail.com.au>
To: <vsnet-chat@kusastro.kyoto-u.ac.jp>; <vsnet-id@kusastro.kyoto-u.ac.jp>;
<samus@sai.msu.ru>
Sent: Monday, March 26, 2001 4:01 PM
Subject: NSV5602 is a high proper motion M4 dwarf.


>
>
>              Recently one of our Australian observers, Colin Bembrick
(NSW),
>  took a CCD image of the field of NSV 5602. He reports that it was
difficult
>  to identify the field, compared to a chart printed from Guide7, as NSV
5602
>  was missing, and also 2 or 3 nearby GSC stars were often missing from
> rather
>  old photos of the region. I have looked into this puzzle, and it turns
out
>  that NSV 5602 = HIP 60559 = GL 465 = LHS 45.   Its high pm of -2.3"/year
in
>  dec, and +0.077s/year in RA carries it southwards and slightly E fairly
>  rapidly.  Some positions, taken at different epochs are as follows: All
>  refer to equinox J2000.
>
>  1954 Mar 07  :  12h24m48.98s -182'46.6"     USNO-A2.0 .Close to
original
>  NSV position.
>  1979 June 15                 50.82          13 45.3      GSC6105.945
>  1984 Mar 06                 51.20          13 56.6      GSC6105.453
>  2001 Mar 26                 52.60          14 35.1      HIP 60559 =
>  GSC6105.1620,  correct at current date.
>
>  All four positions refer to the same star. The three GSC objects are
>  displayed simultaneously by Guide7, which can result in confusion.   NSV
>  5602 lies about 1 degree east of TV Corvi = Tombaugh's star.
>
>  HIP 60559.  Mag:  11.28V,  B-V +1.57. Spectrum = M4.
>
>  Cheers,
>  Mati Morel
>  +++++++++++++++++++++++++++++++++++++++
>  Morel Astrographics
>  *Charts* Variable Star Studies* Specialized Atlases*
>  morel@ozemail.com.au
>  Web: http://vsnet.ozemail.com.au/~morel
>
>  ********************************************
>
>
>
>

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