Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4893: 1989y; N Sct 1989

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 4892 SEARCH Read IAUC 4894
IAUC number 

                                               Circular No. 4893
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


PERIODIC COMET HELIN-ROMAN-ALU 2 (1989y)
     The following positions have been reported:

     1989 UT             R.A. (1950) Decl.        m1    Observer
     Oct. 30.60772    3 08 43.72   +12 16 35.6    16    McNaught
     Nov.  1.28965    3 08 10.39   +12 01 27.4          Balam

R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt telescope.
D. Balam (Victoria).  0.25-m Schmidt telescope.  Measured by
  J. B. Tatum.

     Orbital elements from 5 observations, Oct. 26-Nov. 1:

     T = 1989 Oct. 31.749 ET          Peri. = 199.994
     e = 0.54532                      Node  = 203.062   1950.0
     q = 1.97617 AU                   Incl. =   7.826
       a =  4.34632 AU     n = 0.108773     P =   9.06 years

     1989 ET      R.A. (1950) Decl.     Delta      r       m1
     Oct. 31     3 08.60    +12 13.0    0.995    1.976    15.9
     Nov.  5     3 06.83    +11 28.8
          10     3 04.88    +10 46.1    0.991    1.978    15.9
          15     3 02.92    +10 06.1
          20     3 01.09    + 9 29.9    1.010    1.984    16.0
          25     2 59.55    + 8 58.7
          30     2 58.44    + 8 33.2    1.051    1.994    16.1
     Dec.  5     2 57.85    + 8 13.9
          10     2 57.88    + 8 01.0    1.114    2.008    16.3
          15     2 58.57    + 7 54.4
          20     2 59.92    + 7 53.9    1.194    2.025    16.5


NOVA SCUTI 1989
     Visual magnitude estimates (cf. IAUC 4882):  Oct. 23.75 UT,
11.1 (E. Schweitzer, Strasbourg, France); 24.05, 11.7 (P. Walker,
Vergennes, VT); 24.74, 11.3 (G. Comello, Roden, The Netherlands);
25.76, 11.5 (Schweitzer); 26.78, 11.1 (Schweitzer); 29.78, 11.3 (A.
Pereira, Cabo da Roca, Portugal); 30.80, 12.1 (A. Boattini, Florence,
Italy); 31.74, 11.2 (P. Schmeer, Bischmisheim, West Germany).


1989 November 2                (4893)             Daniel W. E. Green

Read IAUC 4892 SEARCH Read IAUC 4894

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

Valid HTML 4.01!