Central Bureau for Astronomical Telegrams
IAUC 2886: 1975 TB; 1975j; 1975n; EDITORIAL NOTICE
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Circular No. 2886
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
1975 TB
R. M. West, European Southern Observatory, informs us that the
times of observation of the fast-moving object reported on IAUC
2874 should be increased by +1 day. The magnitude is very difficult
to estimate but around 10. The following positions of the
ends of another trail confirm the sense of motion:
1975 UT R. A. (1950) Decl.
Oct. 5.17355 0 46 18.92 -38 00 03.3
5.21522 0 46 02.84 -38 05 02.3
Computations by K. Aksnes, B. G. Marsden and Z. Sekanina suggest
that the object is an Apollo asteroid having large orbital
inclination and/or small semimajor axis. Attempts to fit a geocentric
orbit failed. The object must now be too close to the sun for
observation. The following variant ephemerides are provided in the
hope that further observations can be identified:
(1) (2)
1975 ET R. A. (1950) Decl. R. A. (1950) Decl. Mag.
Aug. 6 2 07 +21.9 1 55 +25.2
16 2 12 +19.5 2 04 +23.0 13
26 2 13 +15.6 2 09 +19.2
Sept. 5 2 10 + 9.4 2 09 +12.7 12
15 1 58 - 0.9 1 59 + 1.6
25 1 33 -17.1 1 34 -16.2 10
Oct. 5 0 47 -37.7 0 47 -37.7
15 23 31 -54.5 23 37 -53.6 11
25 21 56 -62.7 22 17 -61.2
COMET MORI-SATO-FUJJKAWA (1975j)
Further precise positions have been reported as follows:
1975 UT R. A. (1950) Decl. Observer
Nov. 24.06181 8 37 14.60 -44 35 12.4 Hers
24.81578 8 36 45.36 -45 34 40.3 Kurosaki
24.81821 8 36 45.35 -45 34 50.7 "
29.85069 8 32 02.15 -52 11 08.4 Hers
30.05764 8 31 46.28 -52 27 24.0 "
Dec. 3.06181 8 27 22.78 -56 20 39.1 "
4.26309 8 25 12.90 -57 52 32.4 Debehogne
4.27002 8 25 12.36 -57 53 02.5 "
5.08889 8 23 34.40 -58 55 11.1 Hers
5.16698 8 23 25.45 -59 00 57.4 Debehogne
5.18245 8 23 23.46 -59 02 11.2 "
8.07708 8 16 23.61 -62 36 27.3 Hers
J. Hers (Randburg, near Johannesburg).
T. Kurosaki (Utsunomiya). Communicated by T. Seki.
H. Debehogne and R. R. de Freitas Mourao (National Observatory, Rio
de Janeiro). 25-cm f/7 astrograph.
Selected total visual magnitude estimates: k4ov. 2.25 UT, 9.7
(K. Simmons, Switzerland, Florida, 11-cm reflector); 5.83, 8.8 (L.
Boethin, Bangued, The Philippines, 20-cm reflector); 11.39, 8.3 (J.
Bortle, Brooks Observatory, 10 x 50 binoculars); 12.41, 8.0
(Bortle); 13.45, 8.5 (P. Maley, Houston, Texas, 13-cm refractor);
14.45, 8.7 (Maley); 16.41, 7.8 (Bortle); 18.88, 9.1 (Boethin).
COMET WEST (1975n)
The following precise positions have been reported:
1975 UT R. A. (1950) Decl. m1 Observer
Dec. 1.39653 20 29 39.9 -38 43 34 12.5 Seki
6.06597 20 33 58.34 -38 14 52.4 Giclas
6.07361 20 33 58.80 -38 14 42.5 "
T. Seki (Kochi Observatory, Geisei Station).
H. L. Giclas (Lowell Observatory). Measurer: M. L. Kantz.
EDITORIAL NOTICE
With this issue the number of these Circulars published this
year has reached 150. Although the record number of discoveries of
both comets and novae most decidedly contributed to this great volume
of material, it is quite clear that many of the items published
belong elsewhere. Following the recommendation of IAU Commission 6
at its meeting in 1973 (cf. IAUC 2571) we have already rejected
several reports on the grounds that they did not refer to transient
events, and we must now extend this policy to reports of transient
events when it seems improbable that early publication would inspire
important positive observations. Contributors are urged to
consider whether their reports might more appropriately be published
in the conventional astronomical literature. When items are
accepted for publication here we reserve the right to limit them to
their most significant points.
1975 December 19 (2886) Brian G. Marsden
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