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IAUC 5113: 1990 SQ; AX Per

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                                                  Circular No. 5113
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


1990 SQ
     Further observations from D. Balam and J. Tatum at Victoria:

     1990 UT             R.A. (1950) Decl.
     Sept.27.21979   21 50 53.04   -18 57 20.2
          27.25573   21 50 48.05   -18 55 47.5
          30.25174   21 44 31.56   -16 44 00.5
     Oct.  6.26667   21 33 50.36   -11 59 17.7

     Improved orbital elements from observations Sept. 23-Oct. 6:

     T = 1990 Nov. 28.103 ET          Peri. =  51.985
     e = 0.44686                      Node  = 358.205   1950.0
     q = 1.10367 AU                   Incl. =  17.440
       a =  1.99528 AU     n = 0.349703     P =   2.82 years

     1990 ET      R.A. (1950) Decl.     Delta      r       V
     Oct.  6    21 34.26    -12 12.0    0.334    1.241    13.4
          11    21 27.38    - 8 02.1
          16    21 22.47    - 3 45.9    0.335    1.197    13.6
          21    21 19.51    + 0 32.1
          26    21 18.41    + 4 48.5    0.344    1.161    13.8
          31    21 19.03    + 9 01.1
     Nov.  5    21 21.23    +13 08.7    0.358    1.132    13.9
          10    21 24.92    +17 10.3
          15    21 30.06    +21 05.8    0.375    1.113    14.1
          20    21 36.64    +24 55.2
          25    21 44.72    +28 38.9    0.393    1.104    14.2


AX PERSEI
     Visual magnitude estimates (cf. IAUC 4994):  Mar. 31.84 UT, 9.8
(P. Schmeer, Bischmisheim, Germany); May 2.12, 10.0 (Schmeer); 30.1,
9.8 (A. Mizser, Budapest, Hungary); July 6.1, 10.1 (J. Bortle,
Stormville, NY); Aug. 1.09, 10.3 (Schmeer); 26.38, 10.4 (P. Sventek,
Houston, TX); Oct. 8.93, 10.6 (A. Pereira, Cabo da Roca, Portugal);
10.82, 10.5 (E. Schweitzer, Strasbourg, France).


1990 October 11                (5113)             Daniel W. E. Green

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