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IAUC 4093: 1985 PA; V1329 Cyg

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                                                  Circular No. 4093
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


1985 PA
     E. Helin and M. A. Barucci report their discovery of a fast-
moving object on exposures with the 0.9-m CERGA Schmidt in the
course of the International Near-Earth Asteroid Survey.  INAS was
also responsible for follow-up at Palomar.  Available positions:

1985 UT           R.A.  (1950.0)  Decl.     Mag.   Observer

Aug. 15.93750   22 32 30.21   -10 06 58.5   16.5   Helin
     15.95833   22 32 28.08   -10 08 26.7            "
     15.96875   22 32 26.84   -10 09 14.0            "
     16.94076   22 30 34.44   -11 20 29.1          Barthelemy
     17.43774   22 29 35.32   -11 57 08.2   16.5   Singer-Brewster
     17.46018   22 29 32.76   -11 58 51.1            "
     18.05615   22 28 21.56   -12 43 34.4          Barthelemy
     18.07698   22 28 19.08   -12 45 04.8            "
     18.08740   22 28 17.80   -12 45 50.6            "
     18.17665   22 28 06.86   -12 52 33.1   16.5   Schwartz
     18.29410   22 27 52.03   -13 01 25.5          Singer-Brewster
     18.31597   22 27 49.32   -13 03 09.0          Schombert
     18.39306   22 27 39.37   -13 08 59.6          Singer-Brewster

E. Helin, M. A. Barucci, J.-L. Heudier, A. Barthelemy amd S. Syregard
   (Caussols).  Measurer: C. Pollas.  Times rather uncertain.
S. Singer-Brewster, D. Schneeberger and M. Rudnyk (Palomar).  0.46-
   m Schmidt.  Measurer: R. S. Dunbar.
G. Schwartz (Oak Ridge).  Measurer: C.-Y. Shao.  Image trailed.
J. Schombert (Palomar).  1.2-m Schmidt.  Beginning of trail on 20-
   min exposure.  Measurer: R. S. Dunbar.

     The following orbital elements are very uncertain but satisfy
the observations better than does an orbit with smaller a, e and i:

           T = 1985 Dec. 13.19 ET
       Peri. = 250.98                    e =   0.4653
       Node  = 148.41   1950.0           a =   2.6643 AU
       Incl. =  75.09                    n =   0.22663
           q =   1.4247 AU               P =   4.35 years


V1329 CYGNI
     Visual magnitude estimates: July 28.1 UT, 12.6 (M. Verdenet,
Bourbon-Lancy, France); 30.1, 12.7 (Verdenet); 30.21 UT, 12.0 (R.
Ducoty, Capitola, CA); Aug. 4.9, 12.0 (Verdenet).


1985 August 20                 (4093)              Brian G. Marsden

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