THE ASTRONOMER Electronic Circular No 620 1992 Mar 22 17.46UT
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 JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074
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SW URSAE MAJORIS
Haakon Dahle and Ornulf Midtskogen, Norway, have reported an
outburst of this dwarf nova:
1992 Mar 11.90UT, [15.4 (Midtskogen); 19.86, 11.4 (Dahle);
19.88, 11.4 (Midtskogen)
NOVA CYGNI 1992
Updated 0.5 day means report (data pre 677.5 remains unchanged as
per E617) and based on 303 visual estimates received:
JD Mean Max Min No
677.5 4.56 4.2 4.8 14
678.0 4.73 4.6 5.0 4
678.5 4.91 4.7 5.2 12
679.0 4.73 4.6 4.8 4
679.5 4.86 4.4 5.2 14
680.0 4.75 4.6 4.9 4
680.5 4.87 4.6 5.1 18
681.0 4.88 4.7 5.1 5
681.5 5.04 4.6 5.3 13
682.0 5.10 5.1 5.1 1
682.5 5.31 4.9 5.6 16
683.0 5.40 5.4 5.4 1
683.5 5.52 5.1 5.8 12
684.0 5.75 5.4 6.1 2
684.5 5.70 5.6 5.8 3
685.5 5.75 5.3 6.3 13
686.5 5.78 5.7 5.9 8
687.5 6.04 5.4 6.4 7
688.5 5.86 5.8 6.0 5
689.5 5.84 5.7 6.4 7
690.5 6.07 5.7 6.5 11
691.0 6.20 6.2 6.2 1
691.5 6.20 6.2 6.2 1
692.5 6.42 6.3 6.8 5
693.5 6.40 6.3 6.6 7
694.5 6.28 6.2 6.4 4
695.5 6.28 6.2 6.5 4
696.5 6.30 6.2 6.4 2
697.5 6.43 6.3 6.5 3
698.5 6.55 6.5 6.6 2
699.5 6.45 6.4 6.5 2
700.0 6.60 6.6 6.6 1
700.5 6.60 6.6 6.6 1
701.0 6.90 6.9 6.9 1
701.5 6.82 6.6 7.1 5
702.0 6.93 6.6 7.2 3
.8 3
685.5 5.75 5.3 6.3 13
686.5
To: MIK3207 (10074:MIK3207)
From: M.COLLINS (SQQ1294) Delivered: Wed 25-Mar-92 0:30 GMT Sys 10087 (26)
Subject: Asteroid elements
Mail Id: IPM-10087-920325-004320172
Good morning Nick!
The orbital elements of the 50 asteroids that reach V=12.5 or brighter
during 1992 will be in the post later this morning (Wed).
The format is:
number name H G M omega Omega i
e mu a
and the elements are to ecliptic and equinox 2000.0 and epoch
1992 June 27.0 ET = JED 2448800.5. I have called the file supp92.txt
and I have added it to a copy of the latest version of AST that actually
works on the Amstrad (every time and without fault!)
I would be most grateful for the latest version of your program and I
promise to try it on every machine I can get access to if it fails on my
Amstrad.
One suggestion I have and that is an option to print all asteroids
brighter than a given mag at a given time. There are various uses for
such a list. Presumably there would have to be a warning if the mag limit
was fainter than my 12.5 cutoff which regularly produces 1.5 pages, e.g.
"there are likely to be N lines/M pages do you wish to proceed?"
Best wishes. Mike.
he orbital elements of the 50 asteroids
To: MIK3207 (10074:MIK3207)
From: M.MOBBERLEY (YQQ594) Delivered: Fri 27-Mar-92 20:26 GMT Sys 10087 (3)
Subject: Silverprint
Mail Id: IPM-10087-920327-183800251
Acknowledgment Sent
My Spring '92 Silverprint brochure (front cover is a man wearing a concealed
camera) has the phone no. on the front cover! It is 071 620 0844.
Martin
number name H From: MIK2885 Delivered: Mon 30-Mar-92 20:53 BST Sys 10074 (63)
Subject: E621
Mail Id: IPM-10074-920330-187960401
THE ASTRONOMER Electronic Circular No 621 1992 March 30 20.36UT
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 JANET BOXES:
GMH at UK.AC.CAM.ASTRONOMY.STARLINK or GUYH at UK.AC.SUSSEX.CLUSTER
TELECOM GOLD: 10074:MIK2885 PRESTEL 256471074
-------------------------------------------------------------------
PERIODIC COMET HOWELL (1992c)
This comet has been recovered by S. M. Larson and J. V. Scotti on
CCD images obtained with the Steward Observatory's 2.3-m reflector
(on Mar. 5, with D. Means assisting) and the University of
Arizona's Spacewatch telescope (on Mar. 6 and 7), both on Kitt
Peak.
The observations with the former telescope were made with a Cousins
R filter, and the positions were reduced using secondary field
stars from a scan with the latter telescope. The first Mar. 6
image was very slightly diffuse. The positions are in good
agreement with the prediction on MPC 16379
1992 UT R.A. (2000) Decl. m1
Mar. 5.44889 11 14 53.66 +11 22 03.7 20.8
6.43866 11 14 00.29 +11 27 38.2 21.7
7.41396 11 13 07.20 +11 33 04.6
IAUC 5472
SUPERNOVA 1992M IN ANONYMOUS GALAXY
J. Mueller reports her discovery of a supernova (mag 18-18.5) on an
IV-N plate taken Feb. 25 with the 1.2-m Oschin Telescope by
C.Brewer and J. D. Mendenhall in the course of the second Palomar
Sky Survey. The galaxy is located 289" west and 107" north of SAO
41643 (R.A. = 7h11m59s.7, Decl. = +45 29'53", 1950.0); SN 1992M is
3".4 west and 7" south of the galaxy's centre. N. Reid reports that
the object does not appear on an IV-N plate taken in January.
IAUC 5473
SUPERNOVA 1992N IN IC 4831
J. Maza, University of Chile; and M. Hamuy, Cerro Tololo
Interamerican Observatory, report the discovery by R. Antezana
(University of Chile) of an apparent supernova located about 94"
east and 43" south of the nucleus of the Sa-type galaxy IC 4831
(R.A. =19h10m09s.2, Decl. = -62 21'31", equinox 1950.0). SN 1992N
was found on a 20-min unfiltered IIa-O plate taken by Antezana with
the CTIO Curtis Schmidt telescope on Mar. 10.368 UT. The supernova
appears also on a previous unfiltered IIa-O plate taken with the
same telescope by L. Wells and R. C. Smith on Mar. 3.389. On both
plates the supernova appears at magnitude 19.
IAUC 5475
SUPERNOVA 1992O IN ANONYMOUS GALAXY
M. Hamuy, Cerro Tololo Interamerican Observatory; and J. Maza,
University of Chile, report the discovery by R. Antezana
(University of Chile) of an apparent supernova located about 7"
west and 1" north of the nucleus of a galaxy at R.A. = 19h19m07s.3,
Decl. = -62 55'19" (1950). SN 1992O was found on a 20-min
unfiltered IIa-O plate taken by Antezana with the CTIO Curtis
Schmidt telescope on Mar. 10.368 UT. The supernova appears also on
a similar plate taken with the same telescope by L. Wells and R. C.
Smith on Mar. 3.389. C. Prosser (Harvard-Smithsonian Center for
Astrophysics) obtained CCD images on Mar. 14.396 with the CTIO
0.91-m telescope, yielding V = 17.78 and B-V = +1.34 for the
supernova.
IAUC 5476
Guy M Hurst