Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 2708: 433 EROS; P/SCHWASSMANN-WACHMANN 1

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 2707 SEARCH Read IAUC 2709
IAUC number 

                                                  Circular No. 2708
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS


433 EROS
     The following precise positions have been reported:

     1974 UT             R. A. (1950) Decl.        mpg   Observer
     Sept.15.88146     4 01 26.49   +40 27 43.6   12     Mrkos
          15.88910     4 01 27.56   +40 27 53.0            "
          16.89532     4 04 03.12   +40 47 03.0   12     Petrovicova
          16.90227     4 04 04.22   +40 47 11.2            "
          17.91649     4 06 41.45   +41 06 30.9   12       "
          17.92344     4 06 42.56   +41 06 38.2            "
          19.69028     4 11 18.69   +41 40 13.3          Koishikawa
     Oct.  6.33958     4 56 43.63   +46 44 56.9          Scovil
           6.36458     4 56 47.65   +46 45 28.4            "

A. Mrkos and Ruzena Petrovicova (Klet Observatory).
M. Koishikawa (JCPM Ayashi Station).  20-cm f/5 astrograph.  Long. =
   -140o46'57", Lat. = +38o15'44", h = 110 m.  Measurer: S. Kasahara.
   Computer: N. Satake.  From Nihondaira Obs. Circ. No. 556.
C. E. Scovil (Stamford Museum).  56-cm Maksutov telescope.

     Predicted circumstances for the occultation of kappa Gem A on 1975
Jan. 24.0 UT are still uncertain.  The Klet observations above
suggest that the track given on IAUC 2695 should be shifted eastward
by 14o at Lat. = +45o, by 10o at Lat. = +40o, and by some 6o at Lat. = +30o
and farther south; but it will be some time before the track can be
pinned down with any accuracy.

     Mr. G. E. Taylor, H.M. Nautical Almanac Office, points out
that Eros will make a close approach to BD +51 1128 (= SAO 025467,
mv = 6.6) on Oct. 25.15 UT.  It is unlikely that there will be an
occultation, but accurate observations of the minimum separation
(indicated as 23" at the center of the earth, 13" at the north pole)
could help to improve the prediction for the kappa Gem event.


PERIODIC COMET SCHWASSMANN-WACHMANN 1
     The recent outburst (cf. IAUC 2705, 2706) was independently
detected by the Rev. L. Boethin, of Abra, The Philippines.  He sends
the followinq total visual magnitude estimates, obtained using a 20-cm
reflector: Sept. 20.67 UT, 12.3; 22.71, 12.1.  The coma was
round and diffuse, some 2' to 3' in diameter.


1974 October 15                (2708)              Brian G. Marsden

Read IAUC 2707 SEARCH Read IAUC 2709

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

Valid HTML 4.01!