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IAUC 6246: 73P; 1995ag

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                                                  Circular No. 6246
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 73P/SCHWASSMANN-WACHMANN 3
     The Bureau has received numerous reports from observers
worldwide of independent discoveries of this comet, which has
continued its remarkable outburst in brightness (cf. IAUC 6234), as
shown by the following total magnitude estimates (B = binoculars):
Sept. 30.12 UT, 7.4 (C. S. Morris, Pine Mountain Club, CA, 0.26-m
reflector); Oct. 2.02, 6.6 (G. W. Kronk, Troy, IL, 20x80 B); 7.42,
6.5 (G. Garradd, Loomberah, N.S.W., 10x50 B); 9.91, 5.8 (J. G. de
S. Aguiar, Campinas, Brazil, 11x80 B); 11.39, 5.8 (T. Lovejoy,
Jimboomba, Queensland, Australia, 15x80 B; 1-deg dust tail); 13.07,
5.4 (A. Hale, Cloudcroft, NM, 10x50 B); 15.39, 5.7 (Lovejoy; 1.5-
deg tail); 17.01, 6.0 (Kronk); 19.06, 5.9 (R. Keen, Mt. Thorodin,
CO, 7x50 B).
     Ephemeris from the orbital elements on MPC 25030:

1995 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Oct. 10    15 57.96   -26 13.4   1.320   0.966   46.7   48.8    5.5
     15    16 25.32   -28 11.8   1.314   0.988   48.2   48.9    5.5
     20    16 53.72   -29 49.3   1.314   1.014   49.8   48.6    5.7
     25    17 22.85   -31 03.2   1.322   1.044   51.3   48.0    5.8
     30    17 52.29   -31 51.7   1.336   1.078   52.7   47.1    6.0
Nov.  4    18 21.58   -32 14.3   1.357   1.114   54.0   46.0    6.1
      9    18 50.27   -32 12.1   1.385   1.154   55.1   44.8    6.3
     14    19 17.96   -31 47.2   1.421   1.195   56.1   43.4    6.5
     19    19 44.36   -31 02.5   1.463   1.238   56.8   41.9    6.8
     24    20 09.29   -30 01.6   1.510   1.282   57.3   40.4    7.0
     29    20 32.66   -28 47.8   1.564   1.327   57.5   38.8    7.2
Dec.  4    20 54.46   -27 24.4   1.622   1.373   57.5   37.3    7.4
      9    21 14.76   -25 54.2   1.686   1.420   57.3   35.7    7.7
     14    21 33.67   -24 19.6   1.753   1.467   56.8   34.2    7.9
     19    21 51.29   -22 42.4   1.824   1.514   56.1   32.6    8.1
     24    22 07.77   -21 04.1   1.898   1.562   55.2   31.1    8.3
     29    22 23.23   -19 25.9   1.974   1.609   54.1   29.7    8.5


SUPERNOVA 1995ag IN UGC 11861
     A. V. Filippenko and A. J. Barth, University of California at
Berkeley, write:  "CCD spectrograms (range 310-1000 nm, resolution
0.7-1.4 nm) obtained on Oct. 17 UT with the 3-m Shane reflector at
Lick Observatory show that SN 1995ag is actually of type II, not
type I (cf. IAUC 6244).  There are prominent, broad hydrogen Balmer
lines having P-Cyg profiles."
     P. Sicoli reports the following precise position of SN 1995ag
from an observation made at Sormano, Italy, on Oct. 16.828 UT by F.
Manca and V. Giuliani (0.5-m reflector + CCD):  R.A. = 21h56m19s.4,
Decl. = +73o15'13".6 (equinox 2000.0).


1995 October 19                (6246)            Daniel W. E. Green

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