[vsnet-chat 2229] Re: Asteriod In Field of V723 Sco

[Bill Dillon <bdillon@houston.geoquest.slb.com>]

The Minor Planet Center has a free asteroid finder (see
http://cfaps8.harvard.edu/~cgi/CheckSN.COM).  I don't have an epoch 2000 to
1950 converter, but putting in your positions as epoch 2000 and throwing the
the net wide (1 degree radius), only one object shows up brighter than 14th
magnitude:
--------------------------------
Minor-Planet Checker

The following minor planets, brighter than V = 14.0, were found in the
60-arcminute region around R.A. = 17 46, Decl. = -35 22 20
(J2000.0) on 1999 08 16.45 UT:

 Object designation           R.A.     Decl.    V       Offsets     Motion/hr
                              h  m       '          R.A.   Decl.  R.A.
Decl.

   (93) Minerva             17 50.00 -35 23.0  11.7  48.9E   0.6S   0.2+
0.2+

 End of list

Notes: The offsets and hourly motions are in minutes of arc (R.A. offsets and
motions include the standard cos Decl. term) from the
specified coodinates.
---------------------------------

Regards,

--Bill Dillon
http://vsnet.geocities.com/~amicustellarum



PETER F WILLIAMS wrote:

> Hello All,
>
> While routine observing tonight I checked the field of the suspected
> recurrent nova V723 Sco and at first glance it appeared this star was in
> outburst.  A check of VSS RASNZ chart 665 for this star showed the object a
> little north west of the plotted position of V723 Sco, estimated at 17h 46m
> 36s -35d 22' 20" for equinox 1950 as per the chart.
>
> Over one and a half hours there appeared to be slight movement to the north
> and slight change in brightness as follows :
> UT              MAG
> 990816.4555     127
> 990816.4756     126
> 990816.4993     126
> 990816.5243     127
>
> While it would be nice if this was a nova like object, I feel there was
> slight but clear movement and being only 11 degrees form the ecliptic, an
> asteroid seems reasonable.
>
> Now that I have scribbled all over my chart, would anyone care to identify
> this object?
>

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