Central Bureau for Astronomical Telegrams
IAUC 4909: 1989b1; 1989 UP; UV Per
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Read IAUC 4910
Circular No. 4909
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
PERIODIC COMET TUTTLE-GIACOBINI-KRESAK (1989b1)
J. Gibson, OAO Corporation and Jet Propulsion Laboratory,
reports his recovery of this comet with the 1.5-m reflector (+ CCD
+ Gunn r filter) at Palomar. The seeing was poor on both nights;
the comet image was stellar within the limitations of seeing. The
following positions indicate a correction of Delta(T) = -0.02 day
to the prediction on MPC 12135 (ephemeris on MPC 15265):
1989 UT R.A. (1950) Decl. m2
Nov. 9.50032 10 40 32.21 + 5 37 41.5 19.5
9.50648 10 40 33.32 + 5 37 36.5
9.51264 10 40 34.48 + 5 37 31.6
10.48793 10 43 34.75 + 5 23 43.2
10.49506 10 43 35.99 + 5 23 37.9
10.50101 10 43 37.10 + 5 23 32.0
1989 UP
Extension to ephemeris on IAUC 4895:
1989 ET R.A. (1950) Decl. Delta r V
Nov. 20 10 24.85 +17 23.7 0.091 0.985 17.7
25 10 52.65 +17 17.6
30 11 12.33 +17 04.0 0.130 0.983 18.4
Dec. 5 11 26.96 +16 49.1
10 11 38.21 +16 35.2 0.167 0.996 18.7
15 11 46.99 +16 24.0
20 11 53.77 +16 17.1 0.200 1.022 18.9
25 11 58.72 +16 15.9
30 12 01.89 +16 21.4 0.229 1.060 19.0
UV PERSEI
Visual magnitude estimates (cf. IAUC 4885): Oct. 26.78 UT,
13.5 (E. Schweitzer, Strasbourg, France); 26.90, 12.7 (P. Schmeer,
Bischmisheim, West Germany); 27.81, 12.8 (Schmeer);
30.79, [13.8 (Schmeer).
1989 November 22 (4909) Daniel W. E. Green
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