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IAUC 3660: 1982 BB; Sats OF SATURN; P/SCHWASSMANN-WACHMANN 1

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IAUC number 

                                                  Circular No. 3660
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 617-864-5758


1982 BB
     B. Szeidl, Konkoly Observatory, Budapest, cables that M. Lovas
has discovered a fast-moving asteroidal object as follows:

     1982 UT          R. A. (1950) Decl.       mpg
     Jan. 20.15667   10 53.0     +11 13       16.0

The daily motion is given as dR.A. = -0m.74, dDecl. = +45'.


SATELLITES OF SATURN
     S. P. Synnott, Jet Propulsion Laboratory, reports that his
examination of Voyager 2 images shows another object, designated
1981 S 10, at an orbital radius of 3.5 x 10**5 km from Saturn and at
longitude L = 44o.8 (measured from Saturn's vernal equinox) on 1981
Aug. 1.2389 UT at Saturn.  A frame taken on Aug. 6.7486 UT at
Saturn also shows an object, designated 1981 S 11, at the same
orbital radius and at L = 137o.0.  It is very probable that the
objects are identical, for the prediction of position from either to
the other is accurate to ~ 4o over the 5.5 days.  If so, the
object's mean motion is 147o.4 per day and its period is 2.44 days.
Because camera motion reduced the effective exposure, the object
was not visible in two frames predicted by the orbit.  No significant
inclination is observable.  The estimated diameter is ~ 15 km.

     Synnott and R. J. Terrile also report a further object, 1981
S 12, apparently moving at an orbital radius very near that of
Saturn I (Mimas).  When the frame was shuttered on 1981 Aug. 8.905
UT at Saturn the object trailed Mimas by ~ 108o.  The estimated
diameter is 10 km.


PERIODIC COMET SCHWASSMANN-WACHMANN 1
     H. Kosai, Tokyo Astronomical Observatory, reports the
photographic observation, by M. Huruhata, of an outburst of this comet:
1982 Jan. 16.87 UT, V = 12.3; 18.80, V = 12.5.  The outburst was
also detected visually by E. Barker at the McDonald Observatory on
Jan. 22 and 23, the magnitude (uncertain due to clouds and bad
seeing) being 12 or briqhter.  A. Hale, Mt. Laguna, CA (0.20-m
reflector), estimated m1 = 12 and coma diameter 1' on Jan. 23.50 and
25.44 UT.  There is a current ephemeris on MPC 6211.


1982 January 27                (3660)              Brian G. Marsden

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