Central Bureau for Astronomical Telegrams
IAUC 4698: 1988r; 1988a
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Read IAUC 4699
Circular No. 4698
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
COMET YANAKA (1988r)
The following precise positions have been reported:
1989 UT R.A. (1950) Decl. m1 Observer
Jan. 1.84219 16 20 32.54 - 1 16 39.0 Yusa
1.84323 16 20 31.76 - 1 16 36.2 9 Kojima
1.84369 16 20 31.78 - 1 16 44.3 Yusa
1.84525 16 20 31.13 - 1 16 46.2 Kojima
1.85243 16 20 29.00 - 1 17 09.9 Otomo
1.86186 16 20 25.90 - 1 17 40.8 Kojima
1.86597 16 20 24.75 - 1 17 55.1 "
2.83791 16 15 15.35 - 2 14 33.4 Niijima
2.84132 16 15 14.35 - 2 14 46.1 "
T. Yusa (Sendai Observatory). 0.41-m f/5.2 reflector.
T. Kojima (YGCO Chiyoda Observatory). 0.25-m Wright Schmidt camera.
Tail 10' long in p.a. 315 deg on Jan. 1.843.
S. Otomo (Yamamoto, Miyagi). 0.20-m f/6 reflector. Measurer T. Yusa.
Long. = +140 55 39, Lat. = +37 54 11.
T. Niijima and K. Kanai (Ojima). 0.30-m f/5.8 reflector.
Total visual magnitude estimates: Jan. 1.83 UT, 10.0 (J.
Kobayashi, Kumamoto, Japan, 0.31-m reflector, tail 8'.0 in p.a. 300
deg); 3.46, 9.9 (J. E. Bortle, Stormville, NY, 0.32-m reflector);
3.55, 9.3 (C. S. Morris, near Mt. Wilson, CA, 0.26-m reflector; tail
3' in p.a. 310 deg).
COMET LILLER (1988a)
Ephemeris continuation from the orbital elements on MPC 13459:
1988/89 R.A. (1950) Decl. Delta r m1
Dec. 25 14 38.35 -17 26.2 4.459 3.905 17.1
Jan. 4 14 42.28 -18 33.0
14 14 44.95 -19 35.2 4.377 4.120 17.4
24 14 46.19 -20 32.7
Feb. 3 14 45.86 -21 25.1 4.250 4.330 17.7
13 14 43.82 -22 11.9
23 14 39.99 -22 52.1 4.118 4.537 17.9
Mar. 5 14 34.39 -23 24.7
15 14 27.14 -23 48.5 4.027 4.740 18.2
1989 January 3 (4698) Brian G. Marsden
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