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IAUC 3194: 1978d; Corrs

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IAUC number 

                                                  Circular No. 3194
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK     Telex: 921428
Telephone: (617) 864-5758


PERIODIC COMET TRITTON (1978d)
     Very weak images of this comet have been recorded on exposures
by J. H. Bulger and C.-Y. Shao with the Harvard Observatory's 155-cm
reflector as shown below.  Measurer: Shao.

     1978 UT             R. A. (1950) Decl.        m2    Observer
     Mar. 10.26509    10 21 00.47   + 0 06 08.5   20     Bulger
          11.27627    10 20.2       + 0 10               Shao
          13.20318    10 18 56.01   + 0 15 36.0            "
          14.20973    10 18.2       + 0 20                 "

     The following orbital elements, by B. G. Marsden, are from
five observations Feb. 11 to Mar. 13.  It is possible that the
comet experienced an outburst around the time of the Harvard observation
on Feb. 15, so an extended ephemeris is given in case there
are further outbursts.  In any event observations are much needed.

       T = 1977 Oct. 28.514 ET
   Peri. = 147.739                    e =   0.57940
   Node  = 300.002   1950.0           a =   3.42236 AU
   Incl. =   7.035                    n =   0.155674
       q =   1.43944 AU               P =   6.33 years

     1978 ET     R. A. (1950) Decl.     Delta     r      m2
     Mar. 23    10 13.94    + 0 45.4
     Apr.  2    10 11.95    + 1 08.9    1.254   2.132   20.3
          12    10 12.98    + 1 21.8
          22    10 16.66    + 1 22.7    1.544   2.264   21.0
     May   2    10 22.51    + 1 11.6
          12    10 30.12    + 0 49.4    1.880   2.396   21.7
          22    10 39.10    + 0 16.9
     June  1    10 49.12    - 0 24.5    2.245   2.527   22.3
          11    10 59.96    - 1 13.6
          21    11 11.42    - 2 09.4    2.621   2.657   22.9


CORRIGENDA
IAUC 3082: Nova in Large Magellanic Cloud.  The dates of the
   observations should all be changed by exactly -1.0 day.
IAUC 3190: MCG 5-23-16.  The dates of the observations should read
   1978 Feb. 19-23, not 1977 Feb. 19-23.


1978 March 15                  (3194)              Brian G. Marsden

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