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IAUC 4349: 1987i; 1987A; N Cen 1986

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IAUC number 

                                                  Circular No. 4349
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


PERIODIC COMET KLEMOLA (1987i)
     J. Gibson reports his recovery of this comet on CCD images
obtained with the Palomar 1.5-m reflector as shown below.  The object
appears essentially stellar on Feb. 16; on Mar. 17, there is a tail
between p.a. about 210 deg-270 deg, bordered by streamers about 15" long,
with less-extended structure visible between the streamers.  The
magnitudes are given in the Gunn r band; twilight was present on the
last exposure on each night.  The correction to the prediction on
MPC 10520 is Delta-T about -0.01 day.

       1987 UT            R.A.  (1950)    Decl.        r
       Feb. 16.56132    18 41 23.95    -14 15 17.8    19
            16.56514    18 41 24.38    -14 15 16.8
       Mar. 17.53368    19 42 41.30    -11 39 02.3    18
            17.53826    19 42 41.88    -11 39 00.5
            17.54347    19 42 42.54    -11 38 58.5


SUPERNOVA 1987A IN THE LARGE MAGELLANIC CLOUD
     V. M. Blanco, Cerro Tololo Interamerican Observatory, reports:
"Photometric sequences of Sanduleak -69 202 obtained by A. Walker
and myself (CTIO) and M. F. McCarthy (Vatican), and 5 red and 4
near-infrared plates taken during 1973-1977, show no appreciable
variability, with Rc = 11.97 +/- 0.03 and Ic = 12.05 +/- 0.05.  The R
value agrees with the result by Humphreys et al. (IAUC 4325), but
the I value is somewhat fainter.  These and Isserstedt's (1975, A.
Ap. Suppl. 19, 259) UBV data are not inconsistent with Sanduleak
-69 202 having had a close K-type supergiant companion, no brighter
than luminosity class Ib, in addition to its faint companion 3"
away (star 2 of IAUC 4319).  This estimate assumes Sanduleak -69 202
to be type B3 Ia, star 2 to be type B0 V, the LMC modulus to be
18.5, and that E(B-V) = 0.2."


NOVA CENTAURI 1986
     E. Budding and J. Priestley, Carter Observatory, report UBV
photometry obtained at Black Birch Station (comparison star HD
126610):  1986 Dec. 9.466 UT, V = 5.46 +/- 0.03, B-V = +0.58 +/- 0.04,
U-B = -0.10; Dec. 10.462, 5.65 +/- 0.06, +0.54 +/- 0.01, -0.17.


1987 March 23                  (4349)            Daniel W. E. Green

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