TA e-circular

<title>TA e-circular</title>
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THE ASTRONOMER Electronic Circular No 599       1992 Jan 13 18.45UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
Telex: 9312111261 Answerback: TA G                     JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885                       PRESTEL 256471074
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1992 AC
The following observations are available of a fast-moving
asteroidal object discovered by M. Koishikawa:
     1992 UT             R.A. (2000) Decl.       Mag.   Observer
     Jan.  3.61840    8 51 46.0    + 5 18 05     13.5   Akiyama
           3.62917    8 51 47.1    + 5 18 25              "
           5.70278    8 55 25.15   + 6 24 56.6   14     Koishikawa
           5.72361    8 55 27.17   + 6 25 39.4            "
           7.71962    8 59 01.41   + 7 36 24.6   11     Kushida
           7.73715    8 59 03.13   + 7 37 05.8   13.0   Sugie
           7.74062    8 59 03.49   + 7 37 11.7          Kushida
           7.74479    8 59 03.93   + 7 37 22.7          Sugie

M. Akiyama and T. Furuta (Susono).  Prediscovery observations.
M. Koishikawa (Sendai Observatory, Ayashi Station).  0.20-m
reflector.
Y. Kushida (Yatsugatake South Base Observatory).
A. Sugie (Dynic Astronomical Observatory).  0.25-m f/3.4 Schmidt.

     Orbital elements by S. Nakano from the above observations:
     T = 1992 Feb. 16.671 TT          Peri. =  25.352
     e = 0.41585                      Node  = 121.788   2000.0
     q = 1.21421 AU                   Incl. =  15.941
       a =  2.07858 AU     n = 0.328892     P =   3.00 years

1991/92     R. A. (2000) Decl.     Delta      r    Elong. Phase   V

Jan  14     9 10.74    +12 03.5    0.296    1.260  156.4  18.2 12.8
     19     9 20.75    +16 23.5    0.276    1.248  160.8  15.1 12.5
     24     9 31.49    +21 20.3    0.261    1.237  163.8  12.9 12.3
     29     9 43.03    +26 42.1    0.252    1.229  163.8  12.9 12.2
Feb.  3     9 55.41    +32 11.0    0.248    1.222  160.7  15.5 12.3
      8    10 08.59    +37 26.2    0.249    1.217  155.7  19.5 12.4
     13    10 22.45    +42 09.3    0.254    1.215  150.3  23.8 12.6
     18    10 36.72    +46 07.8    0.264    1.214  145.1  27.8 12.8
IAUC 5426

NOVA PUPPIS 1991
Rob McNaught relays the following report:
Photometry by A.C. Gilmore with the 0.6-m Boller & Chivens
reflector at Mt John Observatory:
                     U.T.        V     U-B    B-V    V-R    V-I
 Nova Pup    1992 Jan.  9.502   8.66  -0.48  +0.60  +1.08  +1.27
 Uncertainties about 0.01 mag in all colours except U-B which may
 be  up to 0.06 more negative.

   Comparison stars measured differentially from HR 3199, assumed
 V = 6.22, B-V = + 0.92.  Only one measure of each:

        Offset E from
        Nova (arcmins)
           '      '      V     B-V
    A   -11.0  +12.2    8.78  +0.25
    B   -12.1  + 8.1    9.20  -0.06
    C   - 8.5  + 0.4    9.32  +1.13
    D   + 0.4  - 9.5   10.11  +0.09
    E   - 5.4  + 2.1   10.74  +0.31

Guy M Hurst
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