Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 3390: 1979e; HR 8752 = HD 217476 = V509 Cas

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 3389 SEARCH Read IAUC 3391
IAUC number 

                                                  Circular No. 3390
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758


COMET TORRES (1979e)
     C.-Y. Shao, Center for Astrophysics, reports the following precise
position from an exposure with the 155-cm reflector at Harvard
Observatory's Agassiz Station:

      1979 UT            R. A. (1950) Decl.
     July 31.21953    19 08 59.43   - 6 57 53.1

     The following improved parabolic orbital elements, by the undersigned,
are from 8 observations from June 26 to July 31:

       T = 1979 July 16.4605 ET  Peri. =  10.2518
                                 Node. = 292.4374  1950.0
       q = 4.68649 AU            Incl. =  92.1710

     1979 ET     R. A. (1950) Decl.     Delta     r      m1
     July 26    19 14.79    - 7 34.8    3.717   4.687   17.6
     Aug.  5    19 03.93    - 6 25.2
          15    18 54.32    - 5 22.7    3.874   4.692   17.7
          25    18 46.27    - 4 27.6
     Sept. 4    18 39.99    - 3 39.2    4.141   4.703   17.8
          14    18 35.49    - 2 56.4
          24    18 32.74    - 2 17.9    4.470   4.719   18.0
     Oct.  4    18 31.62    - 1 42.2
          14    18 31.96    - 1 07.5    4.814   4.740   18.2
          24    18 33.60    - 0 32.6
     Nov.  3    18 36.36    + 0 04.0    5.135   4.766   18.3
          13    18 40.06    + 0 43.4
          23    18 44.55    + 1 26.7    5.404   4.798   18.5


HR 8752 = HD 217476 = V509 CASSIOPEIAE
     W. P. Bidelman, Warner and Swasey Observatory, reports:
"Plates (12 A/mm) taken on Aug. 3 and 7 of this spectroscopically-variable
middle-type star (cf. IAUC 3382) with our 91-cm reflector
show conspicuous H-alpha emission that is very similar to that observed
in 1976 Sept. by Lambert and Luck (Monthly Notices Roy. Astron. Soc.
184, 405).  This object has been detected as a radio source (Higgs
et al. 1978, Astrophys.J.220, L109) and possesses a nearby early-type
companion (1978 Astron. Astrophys. 70, L53).  This star should
be followed closely during its current active phase."


1979 August 13                 (3390)              Daniel W. E. Green

Read IAUC 3389 SEARCH Read IAUC 3391

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

Valid HTML 4.01!