Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 5439: 1992a; RZ Nor; 1991g1

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 5438 SEARCH Read IAUC 5440
IAUC number 

                                                  Circular No. 5439
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


COMET HELIN-ALU (1992a)
      S. Nakano, Sumoto, Japan, communicates the following precise
positions by T. Seki, Geisei:

     1992 UT             R.A. (2000) Decl.        m1
     Jan. 23.48941    8 11 05.39   + 2 57 50.0   15.5
          23.49896    8 11 04.90   + 2 57 42.4
          23.50903    8 11 04.34   + 2 57 37.0
          27.57743    8 07 34.24   + 2 23 58.7   16
          27.58889    8 07 33.61   + 2 23 54.9

     Parabolic orbital elements by Nakano from 7 observations Jan.
9-27:

     T = 1992 July  8.9672 TT         Peri. = 240.3028
                                      Node  = 288.7654  2000.0
     q = 2.996953 AU                  Incl. =  38.9548

1992 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
Jan. 29     8 06.35    + 2 12.6    2.444    3.393  161.6    5.2     15.7
Feb.  8     7 58.03    + 0 58.2    2.432    3.349  154.4    7.3     15.7
     18     7 50.72    - 0 05.9    2.449    3.307  145.0    9.9     15.6
     28     7 45.02    - 1 00.0    2.491    3.267  135.1   12.4     15.6
Mar.  9     7 41.36    - 1 45.7    2.552    3.230  125.3   14.5     15.6
     19     7 39.95    - 2 25.4    2.629    3.195  116.1   16.3     15.6
     29     7 40.81    - 3 01.7    2.717    3.162  107.4   17.5     15.7
Apr.  8     7 43.84    - 3 37.1    2.811    3.132   99.2   18.4     15.7


RZ NORMAE
     This R CrB-type variable has evidently started to fade, as
indicated by the following visual magnitude estimates by D. Overbeek,
Edenvale, South Africa:  Jan. 8.0 UT, 11.5; 12.0, 11.7; 19.0, 12.4;
20.1, 12.5.


COMET ZANOTTA-BREWINGTON (1991g1)
     Total visual magnitude estimates:  Jan. 1.81 UT, 9.0 (A.
Pereira, Cabo da Roca, Portugal, 0.15-m reflector); 10.75, 8.6 (A.
Diepvens, Balen, Belgium, 0.15-m refractor); 21.01, 8.3 (G. W.
Kronk, Troy, IL, 0.33-m reflector; 13' tail in p.a. 52 deg); 22.77,
7.7 (P. Rapavy, Rimavska Sobota, Czechoslovakia, 25x100 binoculars).


1992 January 28                (5439)             Daniel W. E. Green

Read IAUC 5438 SEARCH Read IAUC 5440

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

Valid HTML 4.01!