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THE ASTRONOMER Electronic Circular No 1634      2001 May 17 17.39UT
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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TAV J1907+117
A fuller report (cf E1633) with details of confirmation by Nick
James follows:

Mike Collins, Everton, Bedfordshire, England, has reported his
detection of a variable object (provisionally designated
TAV J1907+117) in Aquila during photography with a 135mm telephoto
lens on Kodak 2415 film for the UK Nova/Supernova Patrol.

The object was recorded on 2001 May 11.988UT at magnitude 10.9 and
the following approximate position was derived:

RA 19h 07.5m DEC +11 44' (2000)

An image of 2000 Nov 26.8 by Collins failed to show the object to a
limit of 12.8 and it was also absent from a master patrol image of
1997 Aug 25.9 where the limiting magnitude was 13.

A more recent patrol image of 2001 Apr 25.1 may show the object
near magnitude 12.1 but as the Milky Way field is crowded this is
rather uncertain.

In response to an appeal, Nick James, Chelmsford, England imaged
the field on 2001 May 16.96587UT and derived the following precise
position from a 30sec V-Band frame with the 0.30-m reflector and
CCD:

RA 19 07 28.41 DEC +11 44 45.8  V 12.6

Astrometry used 15 GSC stars, mean error 0.24", 0.15".

The V magnitude used GSC values for comparison and it is therefore
slightly uncertain.

Nick adds that no candidate can be found in USNO A2.0 catalogue
with the nearest star being:

RA 19 07 28.34 DEC +11 44 52.1 B 18.8  R 16.2

placing it about 6 arc seconds from the measured position of the
suspect.

Guy M Hurst