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IAUC 4292: (473); 1986J; Corrs

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                                                  Circular No. 4292
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


(473) NOLLI
     Remeasurements by R. M. West, European Southern Observatory,
of M. Wolf's original 1901 Heidelberg plates show that the orbit
of this earliest of the lost numbered minor planets (see also IAUC
4278, 4281) has a semimajor axis of 2.6-2.7 AU, which is substantially
smaller than had hitherto been supposed; the object is also
perhaps 2 mag fainter than had been supposed.  As a result,
identifications have been found by the undersigned with 1981 QR (for
which a rather poor elliptical orbit had in fact been published)
and 1986 PP4, as well as with two rough observations in 1940 Feb.
Further details will appear on the Jan. 15 MPCs.  The remaining
lost planets are (719) Albert, (724) Hapag and (878) Mildred.


SUPERNOVA 1986J IN NGC 891
     N. Bartel, Center for Astrophysics; M. Rupen, Princeton
Observatory; and I. Shapiro, Center for Astrophysics, report that
they determined on 1986 Sept. 29 with very-long-baseline-
interferometry (VLBI) at a wavelength of 18 cm the angular size of
SN 1986J to be 0".0014 + 0".0002 (FWHM of a Gaussian).  The size is
significantly above the range of 0".0004 to 0".0008 expected from
interstellar scattering alone.  VLBI observations at shorter
wavelengths and continuation of measurements of optical spectra
are encouraged.  Determination of the supernova's angular expansion
velocity using VLBI, coupled with determination of its radial
expansion velocity using optical spectroscopy, will allow the host
galaxy's distance to be estimated.


CORRIGENDA
IAUC 4232.  Hubble Space Telescope, lines 1-2 and 7-8.  For
   comunicates read  communicates;  for  anounced  read  announced.
IAUC 4243.  Comet Wilson (1986l), line 20.  Add C. Wilson as one
   of the Palomar observers.
IAUC 4262, Fast-moving Objects 1986 TN, 1986 TO, 1986 TP, line 12.
   M. Antal should be given as the observer of 1986 TP on Oct. 10.
IAUC 4287, Supernova 1986N in NGC 1667, line 2.  Add C. Paine
   as one of the discoverers.
IAUC 4290, Nova in Small Magellanic Cloud, lines 7-8 (and with
   reference also to IAUC 4283).  The name should read G. Garradd,
   and he was a collaborator, not a codiscoverer.


1987 January 5                 (4292)              Brian G. Marsden

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