Comet Kobayashi-Berger-Milon (1975h)
Abstract
The following precise positions have been reported: 1975 UT R. A. (1950) Decl. m1 Observer July 8.60139 21 27 19.24 + 1 37 08.7 Suzuki 8.61493 21 27 15.77 + 1 38 45.1 " 8.95139 21 25 45.2 + 2 19 39 Hoffmann 8.96039 21 25 42.8 + 2 20 48 " 10.47885 21 18 08.09 + 5 45 12.7 Millington 11.95252 21 09 16.27 + 9 34 35.0 6.5 Waterfield 13.66076 20 56 38.13 +14 46 48.5 5.4 Seki 13.66563 20 56 35.56 +14 47 50.8 " 14.36499 20 50 30.54 +17 10 52.6 Roemer 14.36823 20 50 28.73 +17 11 33.9 " 14.63853 20 47 58.17 +18 09 12.8 Seki 14.63975 20 47 57.21 +18 09 27.8 Urata 14.64094 20 47 56.43 +18 09 44.2 " 14.65729 20 47 47.02 +18 13 15.2 6 Tomita 14.79063 20 46 29.46 +18 42 04.7 5.0 Seki 15.48646 20 39 26.13 +21 18 40.5 5 Tomita 15.62674 20 37 53.81 +21 51 20.6 " K. Suzuki (JCPM Oi) and T. Urata (Nihondaira Observatory). Measurer: Urata. From Nihondaira Obs. Circ. Nos. 672 and 674. M. Hoffmann and R. Lukas (Hoher List Observatory). R. E. Millington (Carter Observatory). 41-cm Cassegrain reflector. Measurer: Pamela M. Kilmartin. R. L. Waterfield (Woolston Observatory). 5' outer coma, 1'.5 inner. T. Seki (Kochi Observatory, Geisei Station). E. Roemer and M. A. Daniel (University of Arizona). Steward Observatory's 229-cm reflector, Kitt Peak. Measurer: C. McCarthy. Strongly exposed condensation, m2 ~ 14.0-14.5, embedded in inner coma some 0'.5 in diameter. A 10-min exposure shows a somewhat asymmetric coma about 4' in diameter with greatest extension west of south; barest suggestion of tail also west of south. K. Tomita (Tokyo Observatory). Communicated by K. Osawa. Further selected total visual magnitude estimates and coma diameters: July 11.93 UT, 6.3, 8' (S. W. Milbourn, Crawley, England, 11 x 80 binoculars); 13.15, 6.6, - (R. Sweetsir, Cocoa Beach, Florida, 10 x 50 binoculars); 13.92, 4.5, 20' (F. Seiler, Munich, Germany, 10 x 50 binoculars); 14.9, 5.7, 10' (G. Comello, Kapteyn Institute, 7 x 50 binoculars); 15.12, 6.3, - (Sweetsir); 16.30, 5.5, 17' (J. Bortle, Brooks Observatory, 10 x 50 binoculars; broad fan-tail 0o.5-1o long in p.a. 210o); 17.21, 5.9, 14' (P. Maley, Houston, Texas, 7 x 35 binoculars); 18.10, 5.3, > 16' (Bortle); 19.20, 5.7, 14' (Maley); 20.25, 5.3, 14' (Maley); 21.17, 5.7, 14' (Maley).
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- July 1975
- Bibcode:
- 1975IAUC.2803....2S