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IAUC 3152: 1977s; 1977o; Occns BY (15); WRA 977

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IAUC number 

                                                  Circular No. 3152
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 VAN BIESBROECK (1977s)
     R. E. McCrosky reports the recovery of this comet with the 155-cm
reflector at Harvard Observatory's Agassiz Station.  The image is
diffuse, in good agreement with the predicted position on IAUC 3122.

     1977 UT          R. A. (1950) Decl.       m2
     Dec. 17.41000   13 56.5     - 7 15       20


PERIODIC COMET SCHUSTER (1977o)
     R. M. West provides the following precise positions, measured
from exposures by H.-E. Schuster and G. and O. Pizarro with the 100-cm
Schmidt at the European Southern Observatory.  On Dec. 3 about 1'
of tail was well visible.  The time of the first observation of this
comet (IAUC 3123) should be changed to Sept. 5.20811 UT.

     1977 UT             R. A. (1950) Decl.
     Nov. 10.07117    23 24 15.29   -26 10 43.4
          13.04012    23 25 30.15   -24 53 12.8
     Dec.  3.04785    23 41 51.68   -15 36 17.3
           3.11710    23 41 56.16   -15 34 18.4


OCCULTATIONS BY (15) EUNOMIA
     Further to the note on IAUC 3144, G. E. Taylor, H.M. Nautical
Almanac Office, informs us that all three components of SAO 97645-97646
= zeta Cnc will be occulted by (15) Eunomia on 1978 Jan. 19.
The nominal southern limit for the occultation of component B is
from Long. = +79o, Lat. = +55o at 1h19m.0 UT to Long. = +95o, Lat. = +50o at
1h20m.0.  The nominal northern limit for the occultation of component
A passes through Long. = +110o, Lat. = +57o at 1h18m.0.  The track for
component C is slightly south of that for component A, and the
event will occur about 8.5 minutes earlier.  There will be further
occultations by (15), of AGK3 +17 846 in the southern Indian Ocean
on Jan. 28 and of AGK3 +17 813 in Arctic regions on Feb. 15.


WRA 977
     Corrigendum.  On IAUC 3146, for  modulation of amplitude 0.4
read  modulation of amplitude 0.4 percent.


1977 December 20               (3152)              Brian G. Marsden

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