TA e-circular

<title>TA e-circular</title>
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THE ASTRONOMER Electronic Circular No 375 1989 Dec 28 18.50UT
Microlink:MAG60138 JANET:GMH at UK.AC.RO-GREENWICH.STARLINK
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074
Telex: 94082518 Answerback: TAGUY
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COMET MCKENZIE-RUSSELL (1989f1)
Preliminary elements:
T=1989 Nov  8.425ET                  Peri=192.220)
                                     Node=293.281) 1950
q=1.97928 AU                         Incl=160.362)
Ephemeris:
1989/90    RA  (1950)  DEC   Earth   Sun   m1
Dec 25     4h39.3m  +01 51
    30     4 11.0   +00 43  1.233  2.076   13.1
Jan  4     3 47.2   -00 09
     9     3 27.7   -00 48  1.451  2.116   13.6
    14     3 12.0   -01 14
    19     2 59.5   -01 31  1.713  2.161   14.0
    24     2 49.6   -01 40
    29     2 41.8   -01 44  1.994  2.212   14.4       IAUC 4931
 
NSV 01020 (= Q1989/95)
Mike Collins, Sandy, reports his recovery of NSV 01020 located at:
RA 02h58m50s  DEC +69 57.0 (1950) on UK Nova Patrol photos of
1989 Nov 29.9UT at mag 10.0 (K2415, 135mmFL). On 1989 Mar 3.9UT
his patrol photo showed it below 11.7 and not visible.
The Editor estimates it at 13.5B on Stellarum (1969 Aug 10/11)
and at about 15B on Lick (1954 Sept 27). A chart can be sent on
e-mail request.
 
TAV 0451+69 (= Q1989/96)
Mike Collins also reports discovery of an uncatalogued variable at:
RA 04h51.8m DEC +69 22'(1950) which is bright in 1988 Dec 20, 10.9
but faint on a current patrol photo of 1989 Nov 29.9UT, 12.1. The
Editor notes a clear difference in brightness on blue-sensitive
atlases:
1954 Oct 30, 14.5B (Lick Atlas)
1969 Oct 7,  12.0B (Atlas Stellarum)
A chart can be sent on e-mail request
 
TASV 0356+34 (= Q1989/102)
Mike Collins has found a possible variable at:
RA 03h56.5m DEC +34 33'(1950) which he estimates at mag 10.8 on
1989 Dec 18.0UT whereas it is near 11.7 on 1989 Jan 5. The Editor
notes it is near 12B on Stellarum (1968 Feb 29) and Lick (1953
Dec 20). A chart is available on request.
 
TA INDEX
We welcome W.D.Hodgson (Doug) to our MICROLINK group. His mailbox
is MAG12607.
 
ASSISTANT EDITOR
We welcome Martin Mobberley as the new Assistant Editor for the
TA magazine. His can be contacted on MAG60205.
 
Guy M Hurst
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