Central Bureau for Astronomical Telegrams
IAUC 2856: 1975k; 1975h
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Read IAUC 2857
Circular No. 2856
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
Western Union: RAPID SATELLITE CAMBMASS
COMET SUZUKI-SAIGUSA-MORI (1975k)
Further precise positions have been reported as follows:
1975 UT R. A. (1950) Decl. m1 Observer
Oct. 8.77465 11 13 23.53 +43 28 12.2 Suzuki
8.78345 11 13 23.94 +43 28 09.7 "
8.80273 11 13 25.20 +43 28 02.9 8.5 Kurosaki
8.81523 11 13 26.06 +43 28 04.3 "
9.79757 11 14 26.68 +43 22 11.8 Suzuki
9.80226 11 14 26.92 +43 22 08.2 "
10.43767 11 15 10.02 +43 17 47.2 Moore
10.78333 11 15 35.12 +43 15 16.0 Koishikawa
10.80833 11 15 36.86 +43 15 02.8 "
10.80971 11 15 37.04 +43 15 02.2 Kurosaki
11.11404 11 15 59.32 +43 12 26.4 8.0 Haddow
12.04829 11 17 13.83 +43 04 11.7 8.0 "
16.77361 11 26 17.59 +41 54 32.1 Koishikawa
16.79549 11 26 21.00 +41 54 07.5 "
23.43767 11 55 53.82 +36 57 44.4 Moore
23.44045 11 55 55.57 +36 57 31.8 "
24.46545 12 04 21.30 +35 17 09.1 "
24.46771 12 04 22.55 +35 16 54.6 "
K. Suzuki (JCPM Oi), T. Kurosaki (Utsunomiya) and M. Koishikawa
(Sendai Observatory, Ayashi Station). From Nihondaira Obs.
Circ. Nos. 698 and 701.
E. Moore (Joint Observatory for Cometary Research). 37-cm f/2
Schmidt telescope. Measurer: E. F. Tedesco. A longer exposure
on Oct. 10.42 UT showed a tail 1o long in p.a. 330o.
K. A. Haddow (Woolston Observatory). Measurer: R. L. Waterfield.
Time of first observation uncertain because of clouds. On the
second exposure there was a 40" coma, very poorly condensed.
The above observations indicate the following corrections to
the ephemeris on IAUC 2852: Oct. 25, dR.A. = -0m.17, dDecl. = +2'.1; 30,
-1m.08, +22'.8; Nov. 4, -1m.49, +8'.9; 14, -0m.63, -1'.7; 24, -0m.40, -1'.6.
Selected total visual magnitude estimates: Oct. 12.40 UT, 7.8
(J. Bortle, Brooks Observatory, 10 x 50 binoculars); 18.46, 8.0 (B.
Hudgens, Clinton, Mississippi, 25-cm reflector); 21.39, 7.0
(Bortle); 21.48, 7.9 (P. Maley, Houston, Texas, 13-cm refractor);
22.39, 6.8 (Bortle); 24.48, 7.8 (Maley); 24.52, 6.8 (M. J. Mayo and
J. Truxton, Agoura, California, 10 x 50 binoculars).
COMET KOBAYASHI-BERGER-MILON (1975h)
The following precise positions have been reported:
1975 UT R. A. (1950) Decl. m1 Observer
July 29.53657 14 43 46.32 +58 13 26.4 Kurosaki
Aug. 5.90056 12 51 00.53 +51 21 01.6 Mundet
5.91167 12 50 53.99 +51 20 14.7 "
Sept.29.83472 10 27 55.66 - 0 13 37.8 6.6 Seki
Oct. 4.50417 10 28 50.02 - 5 09 57.1 Giclas
11.74347 10 30 55.08 -12 27 12.5 Herald
14.17669 10 31 41.4 -14 48 53 Milet
T. Kurosaki (Utsunomiya) and T. Seki (Kochi Observatory, Geisei
Station). From Orient. Astron. Assoc. Comet Bull. No. 111.
Mundet (Fabra Observatory, Barcelona). Computer: N. Torras.
H. L. Giclas (Lowell Observatory). Measurer: M. L. Kantz.
D. Herald (Kambah, near Canberra). Image resolution poor.
B. Milet (Nice Observatory). Image very weak.
The following improved orbital elements, by B. G. Marsden, are
from 277 observations July 6 to October 14. Perturbations by all
nine planets were included. Mean residual 1".49.
Epoch = 1975 Sept. 25.0 ET
T = 1975 Sept. 5.3347 ET Peri. = 116.9755
e = 1.000099 Node = 295.6526 1950.0
q = 0.425561 AU Incl. = 0.7781
1975/76 ET R. A. (1950) Decl. Delta r m1
Nov. 24 10 30.27 -48 50.0 1.796 1.712 11.1
Dec. 4 10 19.27 -55 29.2
14 9 59.71 -61 14.2 1.968 2.025 12.0
24 9 28.82 -65 49.2
Jan. 3 8 45.54 -68 55.3 2.177 2.321 12.8
13 7 54.3 -70 17.0
23 7 05.28 -69 59.0 2.421 2.603 13.6
Feb. 2 6 26.94 -68 26.7
12 6 01.37 -66 11.8 2.693 2.873 14.2
22 5 46.49 -63 39.3
Mar. 3 5 39.48 -61 04.4 2.985 3.133 14.8
m1 = 7.5 + 5 log Delta + 10 log r
Selected total visual magnitude estimates: Oct. 2.12 UT, 7.2
(J. C. Bennett, Pretoria, South Africa, 12-cm refractor, 21 x);
3.10, 6.8 (Bennett); 7.40, 7.1 (J. Bortle, Brooks Observatory, 10 x
50 binoculars); 8.41, 6.9 (Bortle); 13.42, 7.8 (D. Green, Boone,
North Carolina, 12 x 50 binoculars; tail 20' long in p.a. 355o)
1975 October 28 (2856) Brian G. Marsden
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