TA e-circular

<title>TA e-circular</title>
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THE ASTRONOMER Electronic Circular No 530      1991 June 14 19.45UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP, England. Telephone:  (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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COMET LEVY (1991q)
Dan Green, Central Bureau for Astronomical Telegrams, telexes that
David H.Levy of Tuscon, USA has discovered a new comet with a
0.41-m f/5 reflector:
1991 June 14.448UT RA 01h42.2m DEC +13 32'(1950)  m1=8
          14.465      01 42.4      +13 34
IAU TELEX

PERIODIC COMET CHERNYKH (1991o)
J. V. Scotti, Lunar and Planetary Laboratory, reports his recovery
of this comet on Spacewatch images by himself and D. Rabinowitz.
On June 10.460 there was a coma about 8" across and a faint tail
extending more than 8" in p.a. 252 deg.  The indicated correction
to the prediction on MPC 14592 (ephemeris on MPC 17841) is delta
T = -2.4 days.
     1991 UT             R.A. (1950) Decl.        m2
     June  8.41137   23 10 57.02   - 6 57 29.9
           8.42829   23 10 58.09   - 6 57 25.1
           8.44484   23 10 58.93   - 6 57 22.2   20.3
          10.45954   23 12 50.14   - 6 49 11.0
          10.46803   23 12 50.72   - 6 49 09.3
     Improved orbital elements from 240 observations 1977-1991:
                    Epoch = 1992 Jan. 19.0 ET
     T = 1992 Jan. 25.4417 ET         Peri. = 263.1948
     e = 0.593637                     Node  = 129.7432  1950.0
     q = 2.356269 AU                  Incl. =   5.0821
       a =  5.798435 AU    n = 0.0705891    P =  13.963 years
IAUC 5285

PERIODIC COMET SHOEMAKER 1 (1991p)
P. M. Kilmartin, Mount John Observatory, reports that this comet
has been recovered by A. C. Gilmore and herself.  The images are
diffuse, and the last one is very weak.  The indicated correction
to the prediction on MPC 13046 (ephemeris on MPC 17471) is delta
T = -0.6 day.
     1991 UT             R.A. (1950) Decl.        m2
     June  8.70869   21 40 31.49   -43 32 31.1    18
           8.75557   21 40 32.66   -43 32 36.2
          10.71829   21 41 19.50   -43 36 01.0
          10.74873   21 41 19.87   -43 36 03.6
     Improved orbital elements from xx observations 1984-1991:
                    Epoch = 1991 Dec. 10.0 ET
     T = 1991 Dec. 18.2230 ET         Peri. =  18.7733
     e = 0.470347                     Node  = 339.2496  1950.0
     q = 1.985757 AU                  Incl. =  26.2367
       a =  3.749162 AU    n = 0.1357697    P =   7.259 years
IAUC 5286

Guy M Hurst
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