Central Bureau for Astronomical Telegrams
IAUC 4598: 1988g; ASM 2000+25; 3C 279
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Read IAUC 4599
Circular No. 4598
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
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
COMET SHOEMAKER-HOLT (1988g)
Another comet has been discovered by Carolyn and Eugene
Shoemaker and Henry Holt with the 0.46-m Schmidt telescope at
Palomar as follows:
1988 UT R.A. (1950) Decl. m1
May 13.461 22 17.5 +24 03 11
14.449 22 17.8 +24 41
The object is diffuse with condensation and a short fan-shaped
tail.
ASM 2000+25
S. Okamura, Tokyo Astronomical Observatory, Kiso Station, telexes
that candidate A (cf. IAUC 4589) for the x-ray nova reported on IAUC
4588 was found to show emission features in a spectrogram (range
460-670 nm, dispersion 80 nm/mm at H gamma) obtained on May 14 with
the Kiso Schmidt telescope and 2-deg objective prism.
E. R. Craine and J. R. Engel, Western Research Company, Tucson,
confirm that examination of the Near Infrared Photographic Sky Survey
films (epoch 1979 Oct. 27) indicates no object at the position of
candidate B (cf. IAUC 4589) to a limit of about mag 19 in V and 16.5
in I. At the position of candidate A they observe an extremely red
star with V about 18.5 and V-I about +9. No second-epoch images of
this field are available in the NIPSS collection. They note the
presence of other very red stars within the large x-ray error box
specified on IAUC 4588. Their position for candidate A agrees with
the IAUC 4589 position to within about 6".
3C 279
G. Neugebauer and K. Matthews, Palomar Observatory, report: "On
May 2 the near-infrared magnitudes of the quasar 3C 279 (cf. IAUC
4556, 4595) were J (1.25 microns) = 11.52, H (1.65 microns) = 10.74, K
(2.2 microns) = 9.80, L' (3.5 microns) = 8.27 and N (10.1 microns) =
4.94. These magnitudes represent the brightest observations of 3C 279
in the 20 years the near-infrared has been monitored. Other observers
are encouraged to make simultaneous observations."
1988 May 15 (4598) Brian G. Marsden
Read IAUC 4599
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