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IAUC 4599: 1988g; 1987g

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IAUC number 

                                                  Circular No. 4599
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


COMET SHOEMAKER-HOLT (1988g)
     The following precise positions have been measured by C.
Shoemaker from exposures with the 0.46-m Palomar Schmidt telescope:

     1988 UT             R.A. (1950) Decl.        m1
     May  13.48263   22 17 14.82   +24 01 06.6   10.5
          14.44878   22 17 39.40   +24 39 49.0
          15.41961   22 18 02.52   +25 18 36.1

     Parabolic orbital elements from the above observations:

     T = 1988 Feb. 13.59 ET           Peri. = 328.18
                                      Node  = 289.18    1950.0
     q = 1.2160 AU                    Incl. =  63.55

     1988 ET      R.A. (1950) Decl.     Delta      r       m1
     May   9    22 15.05    +21 00.1    1.889    1.767    10.4
          14    22 17.47    +24 21.8
          19    22 19.24    +27 40.5    1.896    1.871    10.6
          24    22 20.33    +30 55.4
          29    22 20.64    +34 05.5    1.913    1.977    10.9
     June  3    22 20.12    +37 09.9
           8    22 18.67    +40 07.9    1.941    2.085    11.1
          13    22 16.19    +42 58.1
          18    22 12.60    +45 39.5    1.979    2.194    11.4
          23    22 07.81    +48 10.8
          28    22 01.75    +50 30.8    2.029    2.304    11.7


PERIODIC COMET TEMPEL 2 (1987g)
     R. M. West, European Southern Observatory, reports: "On a series of
short V exposures (seeing 1".2) on May 16.3 UT with a CCD on the 1.5-m
Danish Telescope at La Silla this comet is seen to be highly active.  A
fanshaped dust tail extends over p.a. 230 to 290 deg, with denser parts
at the edges and also at p.a. 260 deg.  The 230- to 260-deg sector can
be followed to at least 35" from the asymmetric, diffuse coma.  The B
images show a faint, short extension near p.a. 290 deg.  The activity
has presumably begun since mid-April (cf. IAUC 4582)."


1988 May 16                    (4599)              Brian G. Marsden

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