Circular No. 7884

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION

Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.

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SUPERNOVA 2002ck IN UGC 10030 W. D. Li, University of California at Berkeley, reports the LOTOSS (cf.

IAUC 7514) discovery of an apparent supernova on unfiltered CCD images taken with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) on Apr. 23.4 (mag ∼ 16.8) and 24.3 UT (mag ∼ 16.7). SN 2002ck is located at α = 15^{h}47^{m}00^{s}.75, δ = −0^{o}59′25′′.5 (equinox 2000.0), which is 5′′.0 east and 18′′.0 south of the nucleus of UGC 10030. A KAIT image taken on Apr. 14.4 showed nothing at this position (limiting mag ∼ 19.0).

COMET C/2002 H2 (LINEAR) Additional astrometry and the following preliminary parabolic orbital

elements appear on MPEC 2002-H40:

T = 2002 Mar. 23.461 TT  ω = 20.^{o}445
Ω = 269.011 }2000.0
q = 1.63562 AU  i = 110.478
2002TT α_{2000}  δ_{2000}  Δ  r  ϵ  β  m_{1}
Apr. 16 19^{h}36.^{m}94 +20^{o}06.^{′}5 1.396 1.666 86.^{o}3 37.^{o}0 13.4
18 19 35.05 +22 33.8 1.376 1.671 87.8 36.9 13.4
20 19 32.86 +25 04.8 1.358 1.677 89.1 36.8 13.4
22 19 30.34 +27 38.8 1.342 1.683 90.4 36.7 13.4
24 19 27.47 +30 15.4 1.329 1.689 91.6 36.5 13.4
26 19 24.20 +32 53.9 1.319 1.696 92.7 36.3 13.4
28 19 20.50 +35 33.4 1.311 1.704 93.7 36.1 13.4
30 19 16.32 +38 13.0 1.307 1.711 94.5 35.9 13.4
May 2 19 11.60 +40 51.9 1.305 1.719 95.2 35.7 13.4
4 19 06.28 +43 29.1 1.306 1.728 95.7 35.5 13.5
6 19 00.30 +46 03.4 1.310 1.736 96.1 35.3 13.5
8 18 53.58 +48 33.9 1.317 1.745 96.3 35.1 13.5
10 18 46.06 +50 59.6 1.326 1.755 96.4 34.9 13.6
12 18 37.65 +53 19.4 1.339 1.764 96.4 34.7 13.6
14 18 28.27 +55 32.2 1.354 1.775 96.2 34.5 13.6
16 18 17.86 +57 37.3 1.371 1.785 95.9 34.3 13.7

IM NORMAE Visual magnitude estimates by R. Y. Shida, São Paulo, Brazil: Feb.

10.293 UT, 10.2; Mar. 1.258, 10.6; 30.116, 11.3; Apr. 18.115, 11.8.

2002 April 24  \begin{matrix}c \\ ◯ \end{matrix} Copyright 2002 CBAT  Daniel W. E. Green