Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 7713: P/2001 R1

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 7712 SEARCH Read IAUC 7714

View IAUC 7713 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 7713
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)


COMET P/2001 R1 (LONEOS)
     An apparently asteroidal object discovered by LONEOS and
posted on the NEO Confirmation Page has been found cometary.  CCD
astrometry:

     2001 UT             R.A. (2000) Decl.        m1    Observer
     Sept.10.19298   21 36 46.25   -25 58 32.1          LONEOS
          10.20393   21 36 45.63   -25 58 31.9            "
          10.21490   21 36 44.92   -25 58 32.3            "
          10.22590   21 36 44.17   -25 58 34.8            "
          11.17999   21 35 45.43   -25 59 42.5          Dyvig
          11.18628   21 35 45.02   -25 59 42.4            "
          11.19080   21 35 44.74   -25 59 43.6            "
          11.19527   21 35 44.53   -25 59 43.2            "
          11.20507   21 35 43.70   -25 59 44.5   18.4   Smalley
          11.23247   21 35 41.97   -25 59 45.9   18.4     "
          11.24603   21 35 41.12   -25 59 46.9   18.4     "
          11.55271   21 35 22.46   -25 59 55.4   17.3   Gilmore
          11.55449   21 35 22.33   -25 59 55.8   17.2     "
          11.55599   21 35 22.21   -25 59 55.5   17.8     "
          11.56196   21 35 21.85   -25 59 55.9   17.3     "

LONEOS (Lowell Observatory).  0.59-m Schmidt telescope.  Red mag
  17.6.
R. Dyvig (Quinn, SD).  0.66-m reflector.  Object diffuse and
  uncondensed, with slight hint of a tail to the northeast; low
  altitude and haze.
K. Smalley and R. Fredrick (Louisburg, KS).  0.75-m reflector.
  Coma diameter 2", elongated 5" toward in p.a. 45 deg.
A. C. Gilmore (Mt. John).  1.0-m refl.  Broad tail about 15" long
  in p.a. 40 deg.

     Preliminary orbital elements from the above observations:

     T = 2002 Jan. 30.672 TT          Peri. =  20.216
     e = 0.66247                      Node  =  35.664   2000.0
     q = 1.33805 AU                   Incl. =   6.838
       a =  3.96430 AU     n = 0.124869     P =   7.89 years

2001 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Sept. 8    21 39.09   -25 54.9   1.163   2.101  151.0   13.4   17.6
     18    21 29.39   -26 00.4   1.150   2.026  140.0   18.6   17.4
     28    21 22.75   -25 38.4   1.154   1.950  129.4   23.4   17.2
Oct.  8    21 20.08   -24 50.6   1.170   1.876  119.6   27.6   17.1
     18    21 21.73   -23 39.8   1.194   1.804  110.6   31.1   16.9

                      (C) Copyright 2001 CBAT
2001 September 11              (7713)            Daniel W. E. Green

Read IAUC 7712 SEARCH Read IAUC 7714

View IAUC 7713 in .dvi or .ps format.

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

Valid HTML 4.01!