THE ASTRONOMER Electronic Circular No 363 1989 Nov 23 19.19UT 
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 AARSETH-BREWINGTON (1989a1)
Astrometry and photography by D.Buczynski and G.Marsh at Conder
Brow Observatory: 

/1989a1  1989 11 22.24085  16 18 15.74 +24 33 54.4        978
/1989a1  1989 11 22.25813  16 18 15.54 +24 33 04.8        978
6 star AGK 3 reductions
0.55-m f/5 refl.
On the first exposure, comet near edge of plate.

Preliminary parabolic elements by Brian Marsden from 8 observations
Nov 19-22:

T=1989 Dec. 28.238 ET        Peri=204.714
                             Node=346.487  (1950)
q=0.30687 AU                 Incl= 88.593

Ephemeris:

1989 ET RA  (1950)  DEC     Earth  Sun  m1
Nov 20  16h17.78m +26 13.7' 1.414 1.029 8.9
    25  16 18.86  +22 25.6
    30  16 19.96  +18 11.8  1.287 0.822 7.7
Dec  5  16 21.15  +13 19.4
    10  16 22.69  +07 27.4  1.141 0.605 6.1
    15  16 25.39  +00 03.5
    20  16 31.72  -09 37.2  0.994 0.396 4.0
    25  16 48.52  -22 05.1
    30  17 28.93  -35 11.0  0.949 0.312 2.8
Jan  4  18 35.58  -43 41.4
     9  19 46.18  -46 01.1  1.119 0.465 4.9
                                                          IAUC 4911
Guy M Hurst