Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4270: 1986o; 1986L

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 4269 SEARCH Read IAUC 4271
IAUC number 

                                                  Circular No. 4270
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


PERIODIC COMET URATA-NIIJIMA (1986o)
     This comet, originally called 1986 UD (IAUC 4267, 4269), is
of short period.  M. Lovas made an independent discovery of the
object at Piszkesteto on Nov. 4 and described it as asteroidal,
surrounded by a faint asymmetric coma.  The following orbital
elements, based on an Oct. 29 prediscovery observation at Brorfelde
and 20 other observations through Nov. 7, are from MPC 11339:

          T = 1986 Nov. 23.132 ET
      Peri. =  21.566                    e =   0.58192
      Node  =  31.269   1950.0           a =   3.45595 AU
      Incl. =  24.044                    n =   0.153410
          q =   1.44485 AU               P =   6.42 years

     1986/87 ET  R.A. (1950.0) Decl.      p        r       m1

     Nov. 16     1 31.05    +30 44.8    0.497    1.447    16.1
          21     1 23.89    +33 46.5
          26     1 18.27    +36 27.9    0.539    1.445    16.3
     Dec.  1     1 14.47    +38 50.0
           6     1 12.63    +40 54.9    0.596    1.452    16.5
          11     1 12.83    +42 45.2
          16     1 15.02    +44 23.1    0.664    1.466    16.8
          21     1 19.14    +45 50.5
          26     1 25.09    +47 08.8    0.741    1.488    17.1
          31     1 32.79    +48 19.2
     Jan.  5     1 42.14    +49 22.3    0.824    1.518    17.4
          10     1 53.00    +50 18.9
          15     2 05.24    +51 08.8    0.913    1.554    17.7


SUPERNOVA 1986L IN NGC 1559
     P. Mack, South African Astronomical Observatory, reports the
following photometric data, reduced by him from observations made
by I. M. Coulson with the 1.0-m CCD system: Oct. 18.025 UT, V =
13.67, B-V = +0.13, U-B = -0.78; V-R = +0.15, V-I = +0.27; 19.974,
V = 13.72, B-V = +0.15, U-B = -0.72, V-R = +0.16, V-I = +0.32;
20.974, V = 13.75, B-V = +0.17, U-B = -0.65, V-R = +0.18.

     Visual magnitude estimates: Oct. 21.5 UT, 13.5 (T. Cragg,
Coonabarabran, N.S.W.); 23.5, 13.6 (Cragg); 25.5, 13.5 (R. O.
Evans, Hazelbrook, N.S.W); 27.5, 13.7 (R. H. McNaught,
Coonabarabran, N.S.W.); 28.6, 13.7 (McNaught); 30.5, 13.6 (Evans).


1986 November 17               (4270)              Brian G. Marsden

Read IAUC 4269 SEARCH Read IAUC 4271

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!