Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4639: 1985 DO2 = 1988 OG; MXB 1730-333; MARS

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 4638 SEARCH Read IAUC 4640
IAUC number 

                                                  Circular No. 4639
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 617-495-7244/7440/7444
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


1985 DO2 = 1988 OG
     R. W. Sinnott, Sky and Telescope, notes that the Amor-type object
1988 OG (cf. IAUC 4638) appears to be identical with 1985 DO2 (cf. MPC
11405, 11595 and 11612).  The following orbital elements, by C. M.
Bardwell, Center for Astrophysics, link the 1985 and 1988 observations:

                    Epoch = 1988 Aug. 27.0 ET
     T = 1988 Aug.  1.6464 ET         Peri. = 154.0374
     e = 0.326309                     Node  = 164.3423  1950.0
     q = 1.226396 AU                  Incl. =  23.2331
       a =  1.820415 AU    n = 0.4012810    P =   2.456 years

     1988 ET      R.A. (1950) Decl.     Delta      r       V
     Aug.  7    23 18.93    +30 53.9    0.333    1.227    14.6
          12    23 30.87    +27 08.0
          17    23 42.10    +22 24.3    0.293    1.234    14.1
          22    23 52.46    +16 42.6
          27     0 01.78    +10 10.3    0.270    1.247    13.7
     Sept. 1     0 09.93    + 3 04.4
           6     0 16.82    - 4 10.1    0.270    1.265    13.4
          11     0 22.45    -11 05.4
          16     0 26.94    -17 18.1    0.297    1.289    13.6

Corrigendum.  On IAUC 4638, lines 6 and 11, for Ziegler read Zeigler


MXB 1730-333
     F. Makino and the Ginga Team telex: "The bursting activity of
the rapid burster MXB 1730-333 has been detected with large-area
counters aboard the Ginga satellite, beginning Aug. 10.99 UT.  The
bursts were type II short bursts with peak intensity of about 0.1 Crab
and intervals varying from 16 to 38 s."


MARS
     R. Schmude, Jr., College Station, TX, remarks on the appearance on
Aug. 10.3 UT of a bright spot extending about 20 deg by 10 deg at long.
35 deg, lat. 40 deg south.  The feature, more distinct through a red
filter than a green one, extended about 30 deg in longitude on Aug. 12.3.


1988 August 12                 (4639)              Brian G. Marsden

Read IAUC 4638 SEARCH Read IAUC 4640

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

Valid HTML 4.01!