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IAUC 2906: 1975q; V400 Per (N Per 1974)

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IAUC number 

                                                  Circular No. 2906
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


COMET SATO (1975q)
     Further precise positions have been reported as follows:

     1975/76 UT          R. A. (1950) Decl.        m2    Observer
     Dec. 12.80465    12 20 20.17   - 0 59 42.9          Kojima
          12.80951    12 20 20.32   - 1 00 51.2            "
          16.84653    12 25 57.73   -21 59 22.8            "
          16.85139    12 25 58.28   -22 01 12.8            "
     Jan.  4.45683    22 42 39.02   -77 13 49.6   12.8   Gilmore
           4.46549    22 42 44.57   -77 13 05.0            "

N. Kojima (Ishiki, Aichi).  40-cm reflector.  Measurer: T. Seki.
   From Orient. Astron. Assoc. Comet Bull. No. 117.
A. C. Gilmore (Carter Observatory).  Measurer: P. M. Kilmartin.

     According to Japan Astron. Circ. No. 37 the comet was observed
by S. Utsunomiya, Oguni, Kumamoto, on 1975 Nov. 30.847 UT (m1 = 9.5-10,
coma diameter 4'-5') but could not then be confirmed.

     Total visual magnitude estimates: 1975 Dec. 21.49 UT, 8.5 (P.
Maley, Houston, Texas, 13-cm refractor); 1976 Jan. 5.42, 10.5 (S.
McMillan, Brisbane, Queensland, 30-cm reflector, 67 x).

     Ephemeris continuation from the elements on IAUC 2896:

     1976 ET     R. A. (1950) Decl.     Delta     r      m2
     Feb. 12    23 23.17    -55 33.5    1.842   1.353   17.6
          22    23 24.79    -53 38.5
     Mar.  3    23 26.89    -52 19.4    2.006   1.611   18.6
          13    23 29.12    -51 32.2
          23    23 31.06    -51 15.3    2.060   1.872   19.3
     Apr.  2    23 32.26    -51 28.7
          12    23 32.10    -52 13.6    1.543   1.115   16.4

              m2 = 15.0 + 5 log Delta + 10 log r


V400 PERSEI (NOVA PERSEI 1974)
     Visual magnitude estimates: 1975 Oct. 27.85 UT, 13.7 (G. M.
Hurst, Northampton, England); Nov. 6.88, 13.5 (Hurst); 26.86, 13.4
(Hurst); 1976 Jan. 20.01, 13.7 (J. Bortle, Brooks Observatory).


1976 January 23                (2906)              Brian G. Marsden

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