Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 6249: P/1995 S2

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 6248 SEARCH Read IAUC 6250

View IAUC 6249 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 6249
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET P/1995 S2 (WEST-HARTLEY)
     J. V. Scotti, Lunar and Planetary Laboratory, reports the recovery
of comet P/1989 E3 (= 1988 XVI = 1989k) by T. Gehrels and himself with
the 0.9-m Spacewatch telescope at Kitt Peak.  The indicated correction
(ignoring perturbations) to the prediction by S. Nakano on MPC 22031
(ephemeris on MPC 25657) is Delta T = +0.91 day.

     1995 UT             R.A. (2000) Decl.        m1
     Sept.21.47215    6 27 02.97   +30 44 31.6
          21.48218    6 27 03.78   +30 44 34.7   18.8
          21.48956    6 27 04.37   +30 44 36.6   19.1
     Oct. 21.50215    7 03 09.03   +33 22 31.0
          21.51065    7 03 09.52   +33 22 33.8   18.2

Additional information: Sept. 21, m2 = 21.1, coma diameter 11", tail 22"
in p.a. 268 deg; Oct. 21, 20.3, 10", 29" in p.a. 272 deg.

     The following improved orbital elements, by B. G. Marsden, satisfy
17 observations 1989-1995 with mean residual 0".69:

                    Epoch = 1996 Apr. 27.0 TT
     T = 1996 May  12.8971 TT         Peri. = 102.9726
     e = 0.447783                     Node  =  46.6659  2000.0
     q = 2.132962 AU                  Incl. =  15.3464
       a =  3.862545 AU    n = 0.1298356    P =   7.591 years

1995/96     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Oct. 10     6 50.65    +32 15.7    2.391    2.677   95.4   21.8     18.7
     20     7 01.63    +33 13.2    2.228    2.636  102.9   21.6     18.4
     30     7 10.94    +34 19.2    2.071    2.596  110.8   21.0     18.2
Nov.  9     7 18.16    +35 35.3    1.924    2.556  119.1   19.8     18.0
     19     7 22.85    +37 02.4    1.789    2.518  127.7   18.1     17.8
     29     7 24.53    +38 39.6    1.670    2.481  136.6   15.9     17.6
Dec.  9     7 22.85    +40 23.2    1.569    2.445  145.4   13.2     17.4
     19     7 17.72    +42 06.2    1.490    2.410  153.2   10.6     17.2
     29     7 09.55    +43 38.7    1.436    2.376  158.0    8.9     17.0
Jan.  8     6 59.48    +44 50.3    1.407    2.345  157.3    9.3     16.9
     18     6 49.19    +45 34.0    1.402    2.315  151.5   11.7     16.9
     28     6 40.60    +45 47.5    1.420    2.286  143.3   14.9     16.9
Feb.  7     6 35.31    +45 34.4    1.458    2.260  134.4   18.2     16.9


1995 October 21                (6249)              Brian G. Marsden

Read IAUC 6248 SEARCH Read IAUC 6250

View IAUC 6249 in .dvi or .ps format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!