THE ASTRONOMER Electronic Circular No 674 1992 Oct 5 19.18UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885
GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH
GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH
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PERIODIC COMET SLAUGHTER-BURNHAM (1992w)
This comet has been recovered by S. M. Larson and C. D.Slaughter
with the 1.5-m reflector (+ CCD) at the Lunar and Planetary
Laboratory's Catalina Station. Co-adding of the Cousins R-band
images showed a 10" coma and hint of a tail. The comet was also
detected on Sept. 18. The following positions are very close to
the prediction on MPC 16380 (ephemeris on MPC 19888).
1992 UT R.A. (2000) Decl. m1
Sept.24.18228 20 46 17.20 -22 22 52.2 21.5
24.18751 20 46 17.19 -22 22 50.6
24.19206 20 46 17.18 -22 22 51.0
24.20947 20 46 16.94 -22 22 48.7
25.13324 20 46 09.48 -22 20 30.2
25.13939 20 46 09.44 -22 20 29.0
25.15280 20 46 09.31 -22 20 27.6
25.15962 20 46 09.28 -22 20 26.2
25.16830 20 46 09.16 -22 20 24.4
25.17709 20 46 09.11 -22 20 23.2
IAUC 5626
PERIODIC COMET SCHAUMASSE (1992x)
S. Nakano, Sumoto, Japan, reports that this comet has been
recovered by T. Seki, Geisei, using a 0.60-m f/3.5 reflector. The
comet was nearly stellar with slight diffuseness on Oct. 1. The
prediction on MPC 16379 (ephemeris on MPC 20353) requires
correction by Delta(T) = -0.14 day. The prediction with
nongravitational terms by Muraoka on Nakano Note No. 557 (ephemeris
on page 60 of Comet Handbook 1992, Oriental Astronomical Assn.)
requires correction by Delta(T) = -0.02 day.
1992 UT R.A. (2000) Decl. m1
Sept.25.72674 4 25 43.71 +11 08 15.8 20
Oct. 1.77188 4 30 07.34 +11 12 50.8 19.2
IAUC 5627
PERIODIC COMET SWIFT-TUTTLE (1992t)
J. DeYoung and R. Schmidt, U.S. Naval Observatory, report that
P/Swift-Tuttle was observed on Sept. 30.0 UT with the 0.6-m
reflector (+ CCD + H-alpha filter) in Washington. A co-addition of
seven 90-s images shows a prominent fan-shaped inner coma with jets
or extensions of length 22" at p.a. 220 deg and length 19" at p.a.
262 deg.
IAUC 5627
The following positive visual reports have been received from TA
Observers:
1992 Sept 29.80UT, m1=9.0, dia 11' (Roy Panther, Northampton,
0.25-m refl.),
1992 Sept 29.85UT, m1=9.3, dia 2.8' (Haakon Dahle, Norway,
0.20-m T).
1992 Sept 29.89UT, m1=9.5, (Jonathan Shanklin, Cambridge, 0.14-m
refractor).
1992 Sept 30.14UT, m1=9.0, (Bjorn Granslo, Norway, 0.20-m T)
1992 Sept 30.84UT, m1=9.0, dia 6' (Panther).
1992 Oct 2.15UT, m1=8.8, dia 5' (Alfredo Pereira, Portugal, 0.15-m
refl.);
Other observers report failure to detect it at all but its diffuse
nature coupled with larger apertures and higher powers may be a
hindrance.
Guy M Hurst