Central Bureau for Astronomical Telegrams
IAUC 3834: 1983 LC; Occn OF 14 Psc BY (51)
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Circular No. 3834
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
1983 LC
Observations of 1983 LC by J. Gibson with the 1.2-m Schmidt
telescope at Palomar, given below, indicate that this object is an
Apollo-type minor planet. Approximate elements (with a = 2.5 AU,
assumed) from 4 available observations are: T = 1983 Aug. 15.683
ET, Peri. = 185.03 deg, Node = 158.75 deg, Incl. = 1.49 deg,
e = 0.6922 (equinox 1950.0).
1983 UT R.A. (1950.0) Decl.
June 17.34314 16 12 24.2 -11 34 39
18.28272 16 08 33.8 -11 03 50
1983 ET R.A. (1950.0) Decl. p r Mag.
July 2 13 58.26 + 7 43.9 0.076 1.039 16.1
3 13 37.00 +10 40.8
4 13 12.88 +13 50.9 0.068 1.019 16.2
5 12 45.89 +17 07.3
6 12 16.33 +20 19.9 0.065 1.000 16.4
7 11 44.86 +23 16.7
8 11 12.52 +25 47.0 0.066 0.982 16.8
OCCULTATION OF 14 PISCIUM BY (51) NEMAUSA ON 1983 SEPT. 11
L. K. Kristensen has revised the prediction for this event
(B.A.A. Hdbk. for 1983, p. 30) using an orbit of (51) improved by
recent observations and a new position of 14 Psc derived by R.
Bien and H. Schwan from the data at the Astronomisches Rechen-
Institut. The critical minimum geocentric separation between planet
and star is 1".11 +/- 0".08 (m.e.) on Sept. 11.32806 ET (+/- 6s).
With daily motions -49s722 and -584".33, distance 1.5186 AU, and
Delta-T = 53s7, the occultation track is as shown below, where the
longitudes and further increments are measured west and north, the
increments corresponding to a 2-sigma increase in the minimum separation.
The times are in minutes past Sept. 11d07h00m UT. Kristensen (
address Institute of Physics, University of Aarhus, DK-8000 Aarhus
C, Denmark) urgently requests further observations.
Long. Lat. Long. Lat.
44m5 71.60 0.49 39.20 1.65 47m0 94.58 0.92 26.75 1.42
45.0 77.47 0.65 36.53 1.59 47.5 98.01 0.94 24.46 1.40
45.5 82.48 0.76 33.97 1.53 48.0 101.24 0.96 22.23 1.36
46.0 86.91 0.83 31.49 1.49 48.5 104.32 0.98 20.03 1.35
46.5 90.90 0.89 29.09 1.45
1983 July 1 (3834) Daniel W. E. Green
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