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IAUC 4706: 1988r

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                                                  Circular No. 4706
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET YANAKA (1988r)
     Further precise positions have been reported as follows:

     1989 UT             R.A. (1950) Decl.        m1    Observer
     Jan.  3.85000   16 09 39.74   - 3 18 43.4    9     Seki
           3.85035   16 09 39.59   - 3 18 47.3          Otomo
           3.85382   16 09 38.44   - 3 19 00.2            "
           4.82049   16 04 03.18   - 4 25 29.5    8.5   Hayakawa
           4.82743   16 04 00.76   - 4 26 00.1            "
           4.84618   16 03 54.00   - 4 27 20.8    9     Arai
           5.23854   16 01 33.07   - 4 55 52.8          Buczynski
           5.25406   16 01 27.21   - 4 57 02.8   10     Shanklin
           5.25938   16 01 25.60   - 4 57 22.1          Buczynski

T. Seki (Geisei).  Communicated by T. Kobayashi.
S. Otomo (Yamamoto).  0.20-m reflector.  Measurer M. Koishikawa.
S. Hayakawa (YGCO Nagano Station).  0.25-m f/4.0 reflector.
M. Arai and H. Mori (Yorii).  0.30-m f/3.8 reflector.
D. Buczynski (Conder Brow).  Communicated by G. M. Hurst.
J. D. Shanklin (University of Cambridge Observatories).

     Improved parabolic elements from 21 observations Jan. 1-5:

     T = 1988 Dec. 11.657 ET          Peri. =  88.137
                                      Node  = 314.847   1950.0
     q = 0.42790 AU                   Incl. =  70.973

     1989 ET      R.A. (1950) Decl.     Delta      r       m1
     Jan.  8    15 43.59    - 8 41.6
          10    15 28.64    -11 54.2    0.416    0.831     9.8
          12    15 11.59    -15 31.6
          14    14 51.94    -19 31.8    0.369    0.905     9.9
          16    14 29.15    -23 49.9
          18    14 02.74    -28 15.8    0.339    0.979    10.1
          20    13 32.43    -32 34.5
          22    12 58.38    -36 27.6    0.332    1.053    10.3
          24    12 21.46    -39 37.3
          26    11 43.27    -41 51.7    0.349    1.125    10.7
          28    11 05.84    -43 08.4
          30    10 30.99    -43 33.6    0.387    1.197    11.2
     Feb.  1     9 59.93    -43 18.9
           3     9 33.08    -42 36.4    0.443    1.268    11.8


1989 January 8                 (4706)              Brian G. Marsden

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