THE ASTRONOMER Electronic Circular No 451 1990 October 9 18.31UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone: (0256)471074 Int:+44256471074
Telex: 94082518 Answerback: TAGUY Microlink: MAG60138
JANET:GMH @ UK.AC.CAM.ASTRONOMY.STARLINK GUYH@UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074
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TA AGM 1990 (cf E444)
Due to delays with the issue of the magazine for September (which
was finally despatched on October 6) the deadline for the specially
discounted price for admission to the AGM has been extended until
October 14. The extended concession is also available to e-circular
subscribers. Provided your form and remittance are received by
October 14 the price for combined admission and lunch is 9.00pds
per person. Thereafter admission is 5.00pds and lunch 6.00pds.
Preliminary list of speakers:
'Red Variables on the UK Nova Patrol' Mike Collins
'Andalusian Nights -Astrophotography in Sierra Nevada' Stefan Korth
'Colours and Intensities in Saturn' Mark Kidger
'The Geminid Meteor Shower' Tony Markham
'Astro Software Utilities for TA' Nick James
'Asteroidal Occultations and Astronomical Videos' Andrew Elliott
SATURN
Dr.Mark Kidger, Tenerife, reports the following predicted meridian
passes visible from Europe for the new white spot of Saturn:
October 10, 22.05UT; 11, 18.35; 12, 14.55; 13, 21.50.
Victor Gonzalez et al observed it on Oct 7 and reported that it
now occupies around 60 degrees of longitude although still very
bright. This suggests a very rapid evolution of the spot.
KT PERSEI
Stefan Korth relays a message from Jochen Pietz, Erftstadt, F.R.G.
that this Z-Cam star is in standstill:
Sept 9.90UT, 12.2; 10.02, 12.2; 11.91, 12.8; 13.96, 12.9;
14.93, 12.9; 16.90, 12.6; 19.88, 12.8; 21.98, 12.6; 24.85, 12.9;
28.88, 12.6.
PERIODIC COMET MUELLER 2 (1990j)
The following improved orbital elements, from 30 observations (some
of the earlier ones having been corrected) Sept. 15-30, confirm that
the comet is a short-period one. Comet 1987 XXXI = 1987a1 receives
the name P/Mueller 1 and comet 1990l the name P/Mueller 3.
T = 1990 Nov. 8.779 ET Peri. = 166.292
e = 0.39820 Node = 218.679 1950.0
q = 2.07775 AU Incl. = 6.888
a = 3.45253 AU n = 0.153637 P = 6.42 years
1990 ET R.A. (1950) Decl. Delta r m1
Oct 6 0 35.43 +10 16.1 1.096 2.093 16.4
11 0 32.91 + 9 33.6
16 0 30.57 + 8 50.1 1.101 2.085 16.4
21 0 28.57 + 8 07.1
26 0 27.04 + 7 26.1 1.128 2.080 16.4
31 0 26.08 + 6 48.4
Nov. 5 0 25.76 + 6 14.8 1.178 2.078 16.5
10 0 26.11 + 5 46.2
15 0 27.17 + 5 23.0 1.246 2.078 16.7
IAUC 5110
Guy M Hurst