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IAUC 5149: 1990p = 1990 UL3; 1990i; 1990 TR

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IAUC number 

                                                  Circular No. 5149
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


PERIODIC COMET SHOEMAKER-LEVY 2 (1990p = 1990 UL3)
     S. Larson and D. Levy, University of Arizona, report that seven
co-added Cousins red-band CCD images (5-min exposures), taken with
the Catalina 1.5-m telescope centered at Dec. 19.3216 UT, show that
1990 UL3 (cf. IAUC 5138) sports a 28" tail in p.a. 58 deg.  Confirming
images on Dec. 20 show the tail in seven Cousins R and five
Harris V images, although the tail was not visible in weak Harris B
images in poor seeing.  B. Skiff, Lowell Observatory, confirms that
observations (limiting surface brightness near R = 24 arcsecE-2)
with 1.1-m reflector + CCD at Anderson Mesa on Dec. 7 also show the
tail; in a 3-min exposure, the tail was seen as straight and
diffuse, 29" long in p.a. 67 deg.


COMET TSUCHIYA-KIUCHI (1990i)
     Extension to ephemeris on IAUC 5119, from elements on MPC 17400:

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Jan.  4     3 23.89    -36 03.7    1.373    1.859     8.9
          14     2 54.37    -30 58.3
          24     2 38.52    -26 46.1    1.929    2.089    10.1
     Feb.  3     2 30.46    -23 22.5
          13     2 27.09    -20 36.9    2.505    2.321    11.2
          23     2 26.72    -18 20.5
     Mar.  5     2 28.34    -16 27.4    3.036    2.551    12.0
          15     2 31.30    -14 53.1
          25     2 35.17    -13 34.8    3.490    2.779    12.7
     Apr.  4     2 39.63    -12 30.6
          14     2 44.44    -11 39.0    3.847    3.004    13.2


1990 TR
     Extension to ephemeris on IAUC 5137, from elements on MPC 17451:

     1991 ET      R.A. (1950) Decl.     Delta      r       V
     Jan.  4     2 32.62    +28 00.1    0.948    1.684    16.8
          14     2 47.70    +28 19.1
          24     3 04.20    +28 41.1    1.225    1.798    17.6
     Feb.  3     3 21.78    +29 04.6
          13     3 40.17    +29 27.5    1.531    1.911    18.2


1990 December 21               (5149)             Daniel W. E. Green

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