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IAUC 5092: 1982 DB; 1990f

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                                                  Circular No. 5092
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


1982 DB
     R. H. McNaught, University of Adelaide, reports the recovery
of this Apollo-type object by M. Hartley on plates taken by K. S.
Russell with the 1.2-m U.K. Schmidt Telescope of the Anglo-
Australian Observatory.  The following measurements are by McNaught:

     1990 UT             R.A. (1950) Decl.         V
     Sept.16.60950   22 51 59.42   - 4 54 48.6    20
          17.60258   22 50 09.08   - 5 04 28.1    20

     Orbital elements by G. V. Williams, Center for Astrophysics,
from 20 observations 1981-1990:

                    Epoch = 1990 Nov.  5.0 ET
     T = 1991 Feb. 16.9711 ET         Peri. = 157.9456
     e = 0.360428                     Node  = 314.0083  1950.0
     q = 0.952667 AU                  Incl. =   1.4207
       a =  1.489539 AU    n = 0.5421585    P =   1.818 years

     1990 ET      R.A. (1950) Decl.     Delta      r       V
     Sept. 6    23 10.97    - 3 16.4    0.653    1.660    19.5
          16    22 53.13    - 4 49.0
          26    22 34.99    - 6 24.4    0.599    1.569    19.6
     Oct.  6    22 19.67    - 7 45.1
          16    22 09.35    - 8 39.9    0.619    1.469    20.0
          26    22 05.06    - 9 03.7
     Nov.  5    22 06.73    - 8 56.7    0.670    1.364    20.3
          15    22 13.71    - 8 21.1
          25    22 25.32    - 7 18.8    0.717    1.255    20.5
     Dec.  5    22 40.85    - 5 51.6
          15    22 59.78    - 4 01.2    0.737    1.149    20.5


PERIODIC COMET HONDA-MRKOS-PAJDUSAKOVA (1990f)
     Total visual magnitude estimates (cf. IAUC 5082):  Aug. 31.38
UT, 8.3 (J. E. Bortle, Stormville, NY, 20x80 binoculars); Sept.
2.50, 7.8 (C. Morris, Pine Mountain Club, CA, 20x80 binoculars);
10.20, 7.9 (A. Pereira, Cabo da Roca, Portugal, 0.15-m reflector);
18.39, 8.4 (Bortle).


1990 September 18              (5092)             Daniel W. E. Green

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