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IAUC 4859: 1989 RC

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                                                Circular No. 4859
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


1989 RC
     J. Alu and E. Helin report their discovery of another Amor-type
object on Palomar 0.46-m Schmidt films.  The following observations
are available:

     1989 UT             R.A. (1950) Decl.       Mag.   Observer
     Sept. 5.38958    0 34 02.80   -19 52 24.3   16.0   Helin
           5.41927    0 34 06.90   -19 52 40.1            "
           7.34896    0 38 56.82   -20 09 59.4            "
           7.37483    0 39 00.12   -20 10 11.7            "
          21.52122    1 00 13.06   -20 49 12.2          McNaught
          21.55172    1 00 14.33   -20 49 10.8            "

E. Helin, B. Roman, R. Crockett, and C. Mikolajczak (Palomar).
R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt.  V = 16.

     Orbital elements by B. G. Marsden, Center for Astrophysics:

     T = 1989 Aug. 11.738 ET          Peri. = 180.565
     e = 0.51607                      Node  = 139.775   1950.0
     q = 1.12858 AU                   Incl. =   7.393
       a =  2.33212 AU     n = 0.276744     P =   3.56 years

     1989 ET      R.A. (1950) Decl.     Delta      r       V
     Sept.11     0 46.58    -20 33.3    0.193    1.181    14.7
          21     0 59.76    -20 50.2
     Oct.  1     1 05.32    -20 10.1    0.285    1.266    15.7
          11     1 07.35    -18 44.6
          21     1 08.61    -16 46.3    0.416    1.376    16.7
          31     1 10.62    -14 26.8
     Nov. 10     1 14.27    -11 55.1    0.595    1.502    17.8
          20     1 19.80    - 9 18.9
          30     1 27.11    - 6 43.1    0.826    1.635    18.7


CH URSAE MAJORIS
     Visual magnitude estimates by P. Schmeer, Bischmisheim, West
Germany (cf. IAUC 4278):  Sept. 9.07 UT, [12.7; 17.11, 12.5;
18.10, 11.7; 18.82, 11.7; 19.11, 11.7; 19.81, 11.6; 20.82, 11.5.



1989 September 22              (4859)             Daniel W. E. Green

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