Circular No. 5357
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
 
 
1991 RJ2
     A fast-moving asteroidal object was discovered by E. Helin and
P. Rose at Palomar in early September and rediscovered by T. Gehrels
at Kitt Peak in early October.  The following positions are avail-
able:
 
     1991 UT             R.A. (1950) Decl.       Mag.   Observer
     Sept. 8.32587   22 53 00.62   - 1 46 07.0   16.5   Helin
           8.35729   22 53 02.58   - 1 47 02.2            "
           9.26198   22 54 17.12   - 2 13 43.5            "
     Oct.  2.15573   23 22 29.74   -10 40 45.5   18.4   Gehrels
           2.17117   23 22 30.72   -10 40 58.9            "
           2.18467   23 22 31.54   -10 41 09.7            "
           3.17131   23 23 40.18   -10 54 04.6   18.7     "
           3.17995   23 23 40.71   -10 54 11.4            "
           3.19597   23 23 41.71   -10 54 23.6            "
           3.35686   23 23 51.66   -10 56 25.1            "
           3.36783   23 23 52.34   -10 56 33.3            "
           3.37720   23 23 52.93   -10 56 40.1            "
 
E. Helin, K. Lawrence, and S. Cohen (Palomar).  0.46-m Schmidt
   telescope.  Measurer P. Rose.
T. Gehrels (Kitt Peak).  0.91-m Spacewatch telescope.  Measurer J. V.
   Scotti.  Object near edge of field on Oct. 2.  V magnitudes.
 
     Orbital elements by B. G. Marsden from the above observations:
 
     T = 1991 Aug. 11.698 ET          Peri. = 150.344
     e = 0.43159                      Node  = 171.402   1950.0
     q = 1.26250 AU                   Incl. =   8.959
       a =  2.22113 AU     n = 0.297744     P =   3.31 years
 
     1991 ET      R.A. (1950) Decl.     Delta      r       V
     Oct.  1    23 21.14    -10 24.4    0.373    1.357    18.4
           6    23 26.93    -11 26.7
          11    23 32.73    -12 10.2    0.435    1.395    18.9
          16    23 38.60    -12 36.4
          21    23 44.58    -12 47.2    0.509    1.438    19.5
          26    23 50.69    -12 44.7
          31    23 56.92    -12 30.7    0.596    1.484    20.0
 
 
1991 October 3                                    Daniel W. E. Green