Central Bureau for Astronomical Telegrams
IAUC 4139: 1985q; Poss. N IN Sgr; 1985l; DRACONID METEORS 1985
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Read IAUC 4140
Circular No. 4139
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
PERIODIC COMET WIRTANEN (1985q)
A. C. Gilmore and P. M. Kilmartin, Mount John University
Observatory, report their recovery of this comet as shown below. The
images were slightly trailed, and the comet was diffuse with central
condensation. The indicated correction to the prediction on
MPC 8274 is Delta-T = -0.26 day.
1985 UT R.A. (1950.0) Decl. m2
Nov. 13.43486 21 12 39.83 -29 11 52.1 19
13.48463 21 12 43.49 -29 11 22.1
POSSIBLE NOVA IN SAGITTARIUS
W. Liller, Instituto Isaac Newton, telexes that V. Blanco and
he have examined IDS spectrograms, taken by J. Hellwig of Gottingen
with the European Southern Observatory 1.52-m telescope, of the
object reported on IAUC 4135, and find that the star is of spectral
type M, suggesting that it is a long-period variable.
PERIODIC COMET HARTLEY-GOOD (1985l)
R. Russell and D. Lynch, Space Sciences Laboratory, The
Aerospace Corporation, report the following infrared magnitude using
the 1.52-m f/16 Cassegrain Steward Observatory/NASA telescope at
Mt. Lemmon and a 15" aperture: Nov. 8.1 UT, K = 11.37 +/- 0.17.
Total visual magnitude estimates: Nov. 2.14 UT, 7.2 (C. S.
Morris, Palmdale, CA, 20x80 binoculars; tails 1P in p.a. 57, 30'
in p.a. 80, 10' in p.a. 95); 6.17, 6.5 (C. Spratt, Victoria, BC,
0.20-m refl.); 11.79, 7.3 (J.-C. Merlin, Le Creusot, France, 0.15-m
refl.); 14.19, 7.7 (A. Hale, Whitaker Peak, CA, 10x50 binos.).
DRACONID METEORS 1985
C. Steyaert, Vereniging voor Sterrenkunde, Geel, Belgium,
writes that M. De Meyere (Deurle, Belgium) observed the following
effective radio hourly rates of these meteors on Oct. 8 beginning
at these times: 8h UT, 35; 9h, 43; 10h, 47; 12h30m8. The
significant drop during the last hour was probably due in part to
unfavorable alignment of the radiant and the transmitter direction.
Corrigendum. On IAUC 4124, line 4 from foot, for Dra read
xi Dra.
1985 November 18 (4139) Daniel W. E. Green
Read IAUC 4140
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