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THE ASTRONOMER Electronic Circular No 1245      1997 Oct 28 22.01UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK             GMH at AST.STAR.RL.AC.UK
WORLD WIDE WEB                    http://www.demon.co.uk/astronomer
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V635 CAS
Gary Poyner, Birmingham, England reports that this object, which is
the optical component of an X-ray source, is again bright and this
has been confirmed by Tonny Vanmunster of Belgium:

1997 Oct 28.706UT, 14.8 G.Poyner
         28.811UT, 14.8 T.Vanmunster
         28.875UT, 14.8 G.Poyner

EDITORS ABSENCE
The Editor will be away and not contactable from Thursday until
Sunday evening of this week. During this time please refer urgent
matters to Martin Mobberley, Assistant Editor.

OCCULTATION BY JUPITER, 1997 NOVEMBER 13
George Krasinsky, Russia e-mails further comments regarding events
predicted on E1243 and E1244:

We are glad to inform you about an international support of the
proposed observational program of differential CCD observations
of Galilean satellites and a Hipparcos star during the conjunctions
12-14 Nov 1997. More then twenty observatories have expressed
interest and confirmed their plans to participate. To coordinate
collecting and analyzing the observations an international working
group has been established (George Krasinsky and Eleonora Yagudina,
IAA, Russia; Jay Lieske, JPL USA). We hope that participants will
mail their results to members of the working group; all author
rights are warranted.

We would like to make the following recommendations however evident
they may sound:

1. The most informative data are measured differences of right
asccensions and declinations for a set of moments when both objects
are within the field of the CCD camera. The greater number of
measured positions the better.

2. The alternative presentation in the form of angular distances
between the star and the apparent centre of the satellite (or
nearest limb), and the positional angle is informative in the same
degree. Due to smallness of the angular distances the accuracy
1-2 arc minutes of the measured positional angle is sufficient.

3. Even if the positional angle is not available, the accurate
angular distances might contribute considerably.

Ephemerides for any specified site may be obtained by request from
Eleonora Yagudina.
  George Krasinsky/  kra@ipa.rssi.ru
  Eleonora Yagudina/ eiya@ipa.rssi.ru
  Jay Lieske/   jay.lieske@jpl.nasa.gov

Guy M Hurst