Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4674: 1988 TJ1; PSR 1957+20

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 4673 SEARCH Read IAUC 4675
IAUC number 

                                                  Circular No. 4674
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


1988 TJ1
     C. S. and E. M. Shoemaker report the discovery of a fast-moving
asteroidal object with the 0.46-m Schmidt telescope at Palomar:

     1988 UT             R.A. (1950) Decl.       Mag.
     Oct. 12.29201    0 03 05.20   +33 34 03.0   17
          12.31684    0 03 07.12   +33 32 20.3
          13.23489    0 04 32.90   +32 29 39.6   17
     Nov.  4.24288    0 49 02.59   + 0 28 38.6   17.5
           6.31806    0 53 55.78   - 2 23 55.9

     Preliminary orbital elements by B. G. Marsden, Center for
Astrophysics, show this to be an Amor-type object:

     T = 1988 Nov. 15.96 ET           Peri. = 192.69
     e = 0.1684                       Node  = 214.87    1950.0
     q = 1.1393 AU                    Incl. =  15.67
       a =  1.3700 AU      n = 0.61463      P =   1.60 years

     1988 ET      R.A. (1950) Decl.     Delta      r       V
     Nov.  5     0 50.83    - 0 34.9    0.172    1.142    16.0
          10     1 02.80    - 7 03.5
          15     1 15.00    -12 24.1    0.196    1.139    16.6
          20     1 27.29    -16 35.6
          25     1 39.52    -19 44.6    0.232    1.141    17.1
          30     1 51.58    -22 00.1
     Dec.  5     2 03.46    -23 30.8    0.274    1.146    17.6
          10     2 15.16    -24 24.4
          15     2 26.74    -24 47.7    0.319    1.155    18.0


PSR 1957+20
    F. Makino and the Ginga Team, Institute of Space and Astronautical
Science, telex:  "A search for x-ray emission from binary pulsar PSR
1957+20 was conducted with the Large Area Counters aboard Ginga on
Oct. 10.  The upper limit defined as the confusion limit was 6 x 10E-12
erg/cm2/s in the energy range 2-10 keV for a Crab-like spectrum."


1988 November 14               (4674)             Daniel W. E. Green

Read IAUC 4673 SEARCH Read IAUC 4675

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

Valid HTML 4.01!