Central Bureau for Astronomical Telegrams
IAUC 3896: VY Aqr; 1983v
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Circular No. 3896
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 617-864-5758
VY AQUARII
Several observers have independently reported that this
object, considered a recurrent nova (IAUC 3759) but more probably a
dwarf nova, is currently in outburst. Visual (photovisual for
some of the negative observations) magnitude estimates: Nov. 23.8
UT, [12.0 (D. McAdam, Telford, England); 25.37, [15 (M. Huruhata,
Tokyo Observatory); 27.04, [14 (J. Bortle, Stormville, NY); 28.43,
11.1 (S. Fujino, Hamamatsu, Japan); 28.79, 10.3 (R. McNaught,
Royal Greenwich Observatory); 30.02, 10.7 (Bortle); 30.38, 11.2
(Huruhata); 30.82, 10.4 (McNaught); Dec. 2.0, 10.7 (Bortle).
R. W. Argyle, Royal Greenwich Observatory, provides the
following position, obtained by D. H. P. Jones on Nov. 29.78 UT: R.A.
= 21h09m28s36, K = -9deg01'57"1 (equinox 1950.0).
COMET HARTLEY-IRAS (1983v)
The following precise positions have been reported:
1983 UT R.A. (1950.0) Decl. m1 Observer
Nov. 23.44265 21 08 27.57 - 7 29 52.4 Russell
23.45654 21 08 26.49 - 7 29 25.2 "
27.09552 21 04 00.51 - 5 17 50.6 Gibson
28.15905 21 02 51.88 - 4 41 05.1 "
30.09167 21 00 56.23 - 3 35 22.7 12 Skiff
30.12569 21 00 54.10 - 3 34 15.1 "
Dec. 1.94263 20 59 15.84 - 2 34 28.7 McCrosky
K. S. Russell (Siding Spring Observatory). 1.2-m U.K. Schmidt.
J. Gibson (Palomar Observatory). 1.2-m Schmidt. Weak image, short
exposure on Nov. 27; condensation and hint of tail on Nov. 28.
B. Skiff (Lowell Observatory, Anderson Mesa Station). Measurer: E.
Bowell. Declination uncertain on first exposure.
R. E. McCrosky (Oak Ridge Observatory). 1.5-m reflector.
Computations by D. W. E. Green and the undersigned show that
the orbital elements and ephemeris on IAUC 3894 are reasonably
adequate. Further observations are required in order to
investigate an indicated possible departure from parabolic motion.
Total magnitude estimates: Dec. 1.15 UT, ~ 11.5 (D. Levy, Tucson,
AZ, 0.41-m reflector; accidental independent discovery on Nov.
30); 1.98, 10.6 (J. Bortle, Stormville, NY, 0.32-m reflector).
1983 December 5 (3896) Brian G. Marsden
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