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IAUC 6233: P/1995 S1; N Cas 1995

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                                                  Circular No. 6233
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


COMET P/1995 S1 (DE VICO)
     Further to the notes on IAUC 6232, the orbit based on 1846
observations (with e adjusted) gives T = 1846 Mar. 6.044 TT (epoch
1846 Mar. 5.0 TT), all elements being within 0.01 unit of the non-
adjusted solution (the latter having mean residual 1".5).
Ephemeris continuation:

1995 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Sept.30     9 58.24   +10 43.4   1.030   0.671   38.5   68.5    5.8
Oct.  2    10 10.31   +13 07.8   1.010   0.664   38.6   70.0    5.7
      4    10 23.47   +15 32.8   0.993   0.660   38.7   71.2    5.7
      6    10 37.76   +17 56.1   0.980   0.659   38.9   72.2    5.6
      8    10 53.18   +20 15.0   0.970   0.660   39.1   72.8    5.6
     10    11 09.69   +22 26.6   0.964   0.664   39.5   73.1    5.6
     12    11 27.19   +24 28.2   0.962   0.670   40.0   72.9    5.7
     14    11 45.53   +26 17.0   0.964   0.679   40.5   72.4    5.7
     16    12 04.49   +27 50.9   0.971   0.690   41.0   71.5    5.8
     18    12 23.81   +29 08.6   0.982   0.704   41.7   70.3    5.9
     20    12 43.22   +30 09.4   0.997   0.719   42.3   68.8    6.1
     22    13 02.44   +30 53.5   1.016   0.736   42.9   67.0    6.2
     24    13 21.20   +31 21.8   1.039   0.755   43.5   65.2    6.4
     26    13 39.31   +31 35.8   1.064   0.775   44.1   63.2    6.5
     28    13 56.59   +31 37.4   1.093   0.797   44.6   61.1    6.7
     30    14 12.94   +31 28.5   1.124   0.820   45.0   59.0    6.9

     Total visual magnitude estimates:  Sept. 20.51 UT, 6.2 (C. S.
Morris, Whitaker Peak, CA, 20x80 binoculars); 21.164, 6.3 (R. Haver,
Villa S. Giovanni, Italy, 15x80 binoculars); 21.47, 6.3 (A. Hale,
Cloudcroft, NM, 10x50 binoculars).


NOVA CASSIOPEIAE 1995
     R. W. Argyle, Royal Greenwich Observatory, reports an accurate
optical position for N Cas 1995, obtained from 10 observations with
the Carlsberg Automatic Meridian Circle on La Palma by C. Fabricius
and M. Vallejo:  R.A. = 1h05m05s.353 +/- 0s.004, Decl. =
+54o00'40".13 +/- 0".07 (equinox J2000.0, FK5 reference frame, and
epoch 1995.69).  The following V magnitudes (+/- 0.06 mag) were
obtained:  Sept. 5.14 UT, 9.13; 6.14, 9.10; 7.13, 9.08; 8.13, 9.08;
9.13 9.05; 10.13, 9.05; 11.12, 9.07; 12.12, 9.07; 13.12, 9.13.


1995 September 21              (6233)            Daniel W. E. Green

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