Central Bureau for Astronomical Telegrams
IAUC 8285: S/2002 (121) 1; 2004T, 2004U,, 2004V
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Circular No. 8285
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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S/2002 (121) 1
J. Lecacheux, Observatoire de Paris, reports that recent
observations of the satellite of (121) Hermione (cf. IAUC 7980) --
obtained during Jan. 4-6 with the Very Large Telescope and Keck
Observatory adaptative-optics system by F. Marchis, I. De Pater, D.
Hestroffer, P. Descamps, and J. Berthier -- have been used to
compute the probable ground track of an occultation predicted to be
visible for southern-European observers for up to about 3 s around
Feb. 16.938 UT. The parent object (121) will occult the same ninth-
magnitude star, BD +29o1354 (R.A. = 6h49m15s, Decl. = +29o06'.2,
equinox 2000.0), for about 35 s along a parallel path of visibility
located about 1.55 deg south and 64 +/- 5 s earlier [see the
prediction by Dunham 2004, Sky Tel. 107(3), 102] with respect to
the occultation track for the satellite. The retrograde orbit of
S/2002 (121) 1 about the primary (i about 150 deg, P = 1.62722 +/-
0.00007 days) seems to be precessing by about +40 deg/yr around a
pole located within the approximate box R.A. = [10 deg, 20 deg],
Decl. = [-10 deg, 0 deg]. On Feb. 16.938, the satellite is
predicted to be at Delta(R.A.) = +0s.0137 +/- 0s.0010, Delta(Decl.)
= +0".081 +/- 0".018 with respect to the parent body. The 18-km-
wide shadow of S/2002 (121) 1 is predicted to pass across northern
Greece, Albania, central Italy, and southern France (at long.
34.793 deg E, lat. 36.045 deg N on Feb. 16.9347 and at long. 4.722
deg W, lat. 45.230 deg N on Feb. 16.9410; estimated absolute
uncertainties are +/- 75 km for lateral shift and +/- 12 s of
time). Updates and details can be obtained at website URL
http://www.euraster.net.
SUPERNOVAE 2004T, 2004U, AND 2004V
Further to IAUC 8281, J. Graham, B. Swift, and W. Li report
the LOSS discovery of three apparent supernovae on unfiltered KAIT
images:
SN 2004 UT R.A. (2000.0) Decl. Mag. Offset
2004T Feb. 9.4 10 56 10.27 +47 23 43.5 17.5 6".1 E, 10".7 S
2004U Feb. 10.5 11 07 18.83 +28 22 23.6 17.7 1".7 E, 0".9 S
2004V Feb. 10.6 14 50 55.33 +17 13 12.6 18.1 1".2 W, 7".5 N
The offset for SN 2004U is with respect to the center of a galaxy
that itself is 6".7 east and 44".5 north of NGC 3527. Additional
unfiltered KAIT magnitudes: SN 2004T in UGC 6038, Jan. 23.4,
[19.0; Feb. 10.4, 17.5. SN 2004U, 2003 May 13.2, [19.0; 2004 Jan.
21.5, 17.9. SN 2004V, Jan. 22.6, [19.0, Feb. 11.6, 18.0.
(C) Copyright 2004 CBAT
2004 February 11 (8285) Daniel W. E. Green
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