Central Bureau for Astronomical Telegrams
IAUC 3973: 1984j
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Circular No. 3973
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM Telephone 617-495-7244/7440/7444
PERIODIC COMET TAKAMIZAWA (1984j)
Further precise positions have been reported as follows:
1984 UT R.A. (1950.0) Decl. m1 Observer
July 6.02760 21 13 12.88 -13 11 03.8 16 Wild
8.04375 21 13 48.64 -13 35 08.5 13 "
Aug. 2.89650 21 11 35.53 -19 27 19.2 9.5 Mrkos
2.90108 21 11 35.41 -19 27 23.3 "
3.01560 21 11 32.99 -19 28 55.2 Vavrova
3.01878 21 11 32.85 -19 28 57.4 "
3.35198 21 11 26.95 -19 33 21.7 Balam
3.86204 21 11 18.10 -19 40 04.2 Kornos
3.92153 21 11 16.77 -19 40 50.5 "
3.94865 21 11 16.25 -19 41 12.9 Mrkos
3.95027 21 11 16.24 -19 41 14.6 "
4.02706 21 11 14.46 -19 42 14.8 Vavrova
4.02891 21 11 14.50 -19 42 15.8 "
4.92558 21 10 58.39 -19 53 54.5 Kornos
4.95902 21 10 57.65 -19 54 19.3 "
6.07012 21 10 36.92 -20 08 37.1 McAdam
6.72240 21 10 25.08 -20 16 43.4 10 Seki
6.74253 21 10 24.73 -20 16 58.9 "
6.95422 21 10 21.12 -20 19 28.2 Churms
6.95856 21 10 21.03 -20 19 31.5 "
8.74965 21 09 48.22 -20 41 42.3 10 Seki
P. Wild (Zimmerwald). The July 8 image, which showed a bright
asymmetric coma and fanshaped tail extending ~ 1' westward, had
been noted at the time but dismissed as a defect since there
was no similar image on the July 6 film. The July 6 image,
found after the first orbit was available, consisted of a
distinct nucleus (m2 = 17) in a very tenuous coma.
A. Mrkos and Z. Vavrova (Klet). 0.6-m Maksutov telescope.
D. Balam (University of Victoria). 0.25-m f/2 Schmidt.
L. Kornos and P. Rychtarcik (Skalnate Pleso Observatory).
D. McAdam (Madeley, Telford). Measured by P. Birtwhistle.
T. Seki (Geisei). The remark on IAUC 3971 about the July 26
observation should be disregarded. The magnitude m1 = 6.5 (
comparable to SAO 164249) given on IAUC 3970 is correct.
J. Churms (South African Astronomical Observatory, Cape Town).
1984 August 20 (3973) Brian G. Marsden
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