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IAUC 8029: P/2002 X2; XTE J1908+094

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IAUC number

                                                  Circular No. 8029
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

COMET P/2002 X2 (NEAT)
     K. J. Lawrence reports the discovery of a comet by the NEAT
team (which now includes also R. Bambery, E. Helin, S. Pravdo, M.
Hicks, and R. Thicksten) from CCD images taken with the 1.2-m
Schmidt telescope at Palomar (discovery observation below).
Following posting on the NEO Confirmation Page, J. Ticha and M.
Tichy found the comet to show a 7" coma and a 14" tail in p.a. 45
deg on Klet images taken on Dec. 8.8 UT.  P. Holvorcem that the co-
addition of three 120-s exposures taken with the Tenagra II
telescope at Nogales, AZ, on Dec. 8.20 shows a coma with diameter
about 7" and a tail about 14" long in p.a. about 55 deg.  F. B.
Zoltowski, Edgewood, NM, notes that CCD images taken with a 0.3-m
reflector on Dec. 9.15 shows the comet as diffuse with a 15" coma
diameter and a possible faint tail in p.a. 240 deg.

     2002 UT             R.A. (2000) Decl.        m1
     Dec.  7.17100    2 18 17.91   - 7 46 37.0   18.4

     Further astrometry (including prediscovery observations by
LONEOS on Oct. 5 and Dec. 6, and by NEAT on Nov. 5) and the
following orbital elements by B. G. Marsden appear on MPEC 2002-X51.

     T = 2003 Mar. 29.5651 TT         Peri. = 356.0279
     e = 0.373384                     Node  =  78.1561  2000.0
     q = 2.528633 AU                  Incl. =  25.3531
       a =  4.035377 AU    n = 0.1215844    P =   8.106 years

XTE J1908+094
     M. P. Rupen, A. J. Mioduszewski, and V. Dhawan, National Radio
Astronomy Observatory, report the detection of renewed radio
emission associated with the x-ray transient and black-hole
candidate XTE J1908+094 (IAUC 7856):  "After the initial radio
detection (IAUC 7874) on Mar. 21, observations at irregular
intervals with the Very Large Array at 8.46 GHz gave detections
through May 13, then non-detections between June 24 and Nov. 11 (to
rms noise levels of 0.04-0.08 mJy/beam).  On Dec. 7.99 UT, we again
obtained a clear detection of 0.34 +/- 0.055 mJy, at the position
of the transient.  Observations at other wavelengths, particularly
x-ray and near-infrared (cf. IAUC 7897), are urgently requested."

                      (C) Copyright 2002 CBAT
2002 December 9                (8029)            Daniel W. E. Green

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