Central Bureau for Astronomical Telegrams
IAUC 7555: Sats OF JUPITER; 2001B; 2001C
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Circular No. 7555
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)
SATELLITES OF JUPITER
S. S. Sheppard, D. C. Jewitt, Y. R. Fernandez, and G. Magnier,
University of Hawaii, have reported the discovery with the 2.2-m
reflector of a number of faint candidate satellites of Jupiter (cf.
IAUC 7525). Orbit computations by B. G. Marsden, Harvard-
Smithsonian Center for Astrophysics, confirm ten of the objects to
be new jovian satellites, designated S/2000 J 2-J 11. The first
nine, discovered during 2000 Nov. 23-26, have retrograde orbits
with elements (for the epoch 2001 Apr. 1) in the ranges 0.14-0.16
AU for a, 0.15-0.53 for e, and 146-166 deg for i (i.e., similar to
Jupiter VIII, IX, XI, XII, and S/1999 J 1); while the tenth,
discovered on Dec. 5, has a = 0.08 AU, e = 0.22, i = 29 deg
(similar to Jupiter VI, VII, X, and XIII). Absolute magnitudes are
in the range 14.8-16.1. The last observations for all ten
satellites were measured by Sheppard from images obtained during
2000 Dec. 27-2001 Jan. 1 by S. Dahm and A. Evans. Complete
details, with observations, orbits, and ephemerides, are given on
MPEC 2001-A28 and 2001-A29.
SUPERNOVA 2001B IN IC 391
D. W. Xu and Y. L. Qiu, on behalf of Beijing Astronomical
Observatory supernova survey, report the discovery of a supernova
found on unfiltered images taken on Jan. 3.61 (mag about 15.5) and
4.57 UT (mag about 15.2). SN 2001B is located at R.A. =
4h57m19s.24, Decl. = +78o11'16".5 (equinox 2000.0), which is 5".6
west and 8".9 south of the nucleus of IC 391. An unfiltered image
of the field taken on 2000 Dec. 24.54 (limiting mag 18.3) showed
nothing at this position.
SUPERNOVA 2001C IN PGC 19975
T. Puckett, Mountain Town, GA; and and A. Sehgal, Woodinville,
WA, report the discovery of an apparent supernova (mag 14.7) on an
unfiltered CCD frame (limiting mag 20.5) taken with the Puckett
Observatory 0.60-m automated supernova patrol telescope on Jan.
4.09 UT. SN 2001C is located at R.A. = 6h59m36s.10, Decl. =
+59o31'01".6 (equinox 2000.0), which is 14".7 east and 5".7 south
of the center of PGC 19975. The new object was also present and
confirmed on CCD frames taken on Jan. 5.04, but it does not appear
on unfiltered images taken by Puckett on 2000 Oct. 27-31, and it
does not appear on Palomar Sky Survey images taken on 1995 Nov. 11
(limiting mag about 21.0) and 1954 Nov. 3 (limiting mag about 19.7).
(C) Copyright 2001 CBAT
2001 January 5 (7555) Daniel W. E. Green
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