Electronic Telegram No. 4077
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


COMET P/2015 B3 = P/2010 K2 (WISE)
     G. V. Williams has identified astrometry (tabulated below) in Minor
Planet Center data of comet P/2010 K2 (cf. IAUC 9150) in images taken on two
nights with the 1.8-m Pan-STARRS1 telescope at Haleakala.  The apparently
asteroidal images for this recovery indicate a correction to the prediction
by B. G. Marsden on MPC 79350 of Delta(T) = +3.2 days.

     2015 UT             R.A. (2000) Decl.       Mag.
     Jan. 26.46076   10 08 50.01   - 3 56 56.3   22.0
          26.47213   10 08 49.46   - 3 56 59.5   21.9
          26.48348   10 08 48.92   - 3 57 02.4   21.8
     Mar. 18.34856    9 11 57.77   - 3 34 37.2   21.2
          18.36151    9 11 57.03   - 3 34 33.7   21.3
          18.37447    9 11 56.29   - 3 34 30.0   21.2
          18.38738    9 11 55.56   - 3 34 26.6   21.2

The following orbital elements by Williams are from 62 observations spanning
2010 May 27-2015 Mar. 18 (mean residual 0".4); elements and an ephemeris
appear on MPEC 2015-F33.

                    Epoch = 2015 Aug.  6.0 TT
     T = 2015 Aug. 16.78890 TT        Peri. = 334.78826
     e = 0.5698455                    Node  = 275.56751 2000.0
     q = 1.2762153 AU                 Incl. =  11.93938
       a =  2.9668769 AU   n = 0.19286560   P =   5.11 years


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2015 CBAT
2015 March 20                    (CBET 4077)              Daniel W. E. Green