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IAUC 3430: 1979 XA; 1979 XB; 1979 S 3; MODIFICATION TO THE TELEGRAPHIC CODE

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IAUC number 

                                                  Circular No. 3430
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


1979 XA
     Eleanor Helin, California Institute of Technology, reports the
discovery of a fast-moving asteroidal object as follows:

     1979 UT          R. A. (1950) Decl.      Mag.
     Dec. 13.11667    2 37.2     +14 25       14.5

The daily motion is about 1o.25 to the west-southwest.


1979 XB
     Kenneth Russell, U.K. Schmidt Telescope Unit, reports the
discovery of a very fast-moving asteroidal object as follows:

     1979 UT             R. A. (1950) Decl.        Mag.
     Dec. 11.51059     4 24 04      -29 35.4       16
          11.55573     4 23 20      -29 42.2
          13.44144     3 46 07      -34 55.5
          13.44838     3 45 55      -34 56.8


1979 S 3
     J. D. Mulholland, Department of Astronomy, University of Texas
at Austin, reports that a three-exposure plate with the 0.76-m
reflector at the McDonald Observatory shows clearly resolved images
of an apparent satellite close to Saturn.  On Dec. 9.458 UT the
object was 20" east of the planet's center, in the plane of the
edge-on rings.  It appears that the motion was away from Saturn at the
time and is suggested that greatest eastern elongation occurred
around Dec. 9.52 UT.


MODIFICATION TO THE TELEGRAPHIC CODE
     Following discussion at the meeting of IAU Commission 6 in
August, the code for magnitude type in observations of objects other
than comets was extended as follows: Q = 4, range 0.38-0.50 um
(including mpg and standard B); Q = 5, 0.48-0.65 um (including mpv, V);
Q = 6, 0.3-0.4 um (including U); Q = 7, 0.6-1.0 um (including R, I);
Q = 8, 1.0-5.0 um (including J, H, K, L); Q = 9, 5-20 um (including
N, Q).  Complete copies of the revised code can be obtained from
the Central Bureau.


1979 December 14               (3430)              Brian G. Marsden

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