Central Bureau for Astronomical Telegrams
IAUC 3227: 1978f; 1977s; 4U 1630-47
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Read IAUC 3228
Circular No. 3227
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK Telex: 921428
Telephone: (617) 864-5758
COMET MEIER (1978f)
Further precise positions have been reported as follows:
1978 UT R. A. (1950) Decl. m1 Observer
May 11.55208 7 35 46.83 +50 23 06.9 11 Seki
12.46319 7 36 58.44 +50 09 44.8 Tsuchiya
12.46771 7 36 58.83 +50 09 41.6 "
12.48021 7 37 00.26 +50 09 29.7 Furuta
12.49306 7 37 00.85 +50 09 15.4 "
14.45694 7 39 38.14 +49 40 27.0 Tsuchiya
14.46563 7 39 38.65 +49 40 19.8 "
14.48472 7 39 40.40 +49 40 02.8 10.5 Urata
15.47743 7 41 00.73 +49 25 25.8 Tsuchiya
15.47986 7 41 01.14 +49 25 22.5 "
18.25139 7 44 50.27 +48 44 20.8 Balam
23.26042 7 51 57.57 +47 29 43.2 "
24.25347 7 53 23.93 +47 14 45.0 "
24.26042 7 53 24.85 +47 14 36.1 "
26.46667 7 56 39.02 +46 41 15.6 10 Urata
26.47326 7 56 39.53 +46 41 10.5 "
27.16406 7 57 40.94 +46 30 37.7 Miller
T. Seki (Geisei) and T. Furuta (Kagiya). From Orient. Astron. Assoc.
Comet Bull. No. 166.
K. Tsuchiya (Asahikawa). 20-cm f/6 reflector. Measurer: M.
Takeishi. From Nihondaira Obs. Circ. No. 981.
T. Urata (JCPM Yakiimo Station). From Nihondaira Obs. Circ. No. 981.
D. D. Balam (University of Victoria). 25-cm Schmidt telescope.
R. D. Miller (Michigan State University Observatory). Measurer:
J. D. Marche. Long. = +84o29'00", Lat. = +42o42'23", h = 274 m.
The following improved parabolic elements, by the undersigned,
are based on 50 observations Apr. 28 to May 27:
T = 1978 Nov. 11.3913 ET Peri. = 231.4667
Node = 348.6708 1950.0
q = 1.134964 AU Incl. = 43.7444
1978 ET R. A. (1950) Decl. Delta r Elong. m1
June 11 8 20.72 +42 38.6
21 8 37.13 +39 53.5 3.115 2.394 37.8 9.8
July 1 8 54.10 +36 59.3
11 9 11.55 +33 54.0 3.015 2.166 27.5 9.3
21 9 29.42 +30 35.8
31 9 47.68 +27 02.6 2.877 1.939 18.2 8.7
Aug. 10 10 06.36 +23 12.0
20 10 25.52 +19 01.8 2.706 1.717 9.8 8.0
30 10 45.26 +14 29.2
Sept. 9 11 05.77 + 9 31.7 2.513 1.510 3.8 7.3
19 11 27.29 + 4 07.0
29 11 50.19 - 1 46.6 2.317 1.329 7.1 6.6
Oct. 9 12 15.03 - 8 08.9
19 12 42.51 -14 56.4 2.143 1.196 13.2 5.9
29 13 13.66 -22 00.5
Nov. 8 13 49.75 -29 05.1 2.029 1.136 18.8 5.6
18 14 32.13 -35 45.1
28 15 21.77 -41 28.2 2.009 1.166 23.0 5.7
Dec. 8 16 18.18 -45 41.4
18 17 18.46 -48 02.9 2.098 1.277 25.0 6.2
28 18 17.83 -48 32.1
m1 = 3.5 + 5 log Delta + 10 log r
Total visual magnitude estimates: June 2.12 UT, 10.0 (P. Maley,
Houston, Texas, 15-cm refractor); 5.10, 8.8 (C. S. Morris, Prospect
Hill Observatory, 20 x 80 binoculars); 6.10, 8.8 (Morris).
PERIODIC COMET VAN BIESBROECK (1977s)
The following precise positions have been reported:
1978 UT R. A. (1950) Decl. m1 Observer
Jan. 12.41986 14 23 33.50 - 8 56 11.7 Shao
Feb. 10.77569 14 48 09.54 - 9 48 58.1 Johnson
Apr. 7.68715 14 59 34.38 - 7 54 01.1 16 Furuta
7.70104 14 59 33.94 - 7 53 56.8 "
May 2.42778 14 46 59.75 - 6 03 43.1 Bus
C.-Y. Shao (Harvard College Observatory). Measurer: J. H. Bulger.
J. Johnson (Perth Observatory, Bickley). 33-cm astrograph.
T. Furuta (Tokai). From Orient. Astron. Assoc. Comet Bull. No. 167.
S. J. Bus and D. Zelinsky (Palomar Mountain Observatory).
4U 1630-47
M. R. Sims and M. G. Watson, X-Ray Astronomy Group, University
of Leicester, report that this recurrent x-ray transient (Jones et
al. 1976, Astrophys. J. 210, L9) was in outburst at a flux of ~ 0.5
times the Crab (2-18 keV) when it entered the field of view of the
Ariel 5 ssi on May 27. The source was still bright at ~ 0.6 times
the Crab on June 6. Optical observations, particularly of
Grindlay's candidate star (IAUC 3104) are urged during this x-ray
outburst.
1978 June 9 (3227) Brian G. Marsden
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