Central Bureau for Astronomical Telegrams
IAUC 6293: GRO J1744-28; C/1995 Y1
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Circular No. 6293
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)
GRO J1744-28
M. C. Miller, J. M. Quashnock, D. Cole, D. Vanden Berk, D. Q. Lamb,
R. C. Nichol and D. Long, University of Chicago, report: "During Jan.
21.539-21.572 UT we carried out optical/near-infrared observations of
a region of the sky that included the entire XTE error box (IAUC 6291)
for J1744-28, using the Astrophysical Research Consortium's 3.5-m
telescope at Apache Point Observatory. We are confident that we have
seen no new object and no significant brightening of any known object
in the XTE error box down to a magnitude limit of approximately 15.5
in g and 17 in r (compared to POSS g and r plates). Similarly, we are
confident that we have seen no new object and no significant brightening
of any known object in the XTE error box down to a magnitude of
approximately 14 in K', this compared to a K-band map of the region
kindly provided by M. Merrill and I. Gatley (NOAO) and a K'-band map
of the field kindly provided by R. M. Catchpole (Glass, Catchpole and
Whitelock 1987, MNRAS 227, 373). We are continuing to observe the
J1744-28 region each night."
COMET C/1995 Y1 (HYAKUTAKE)
Ephemeris continuation (cf. IAUC 6281) from the orbital elements
on MPEC 1996-B06:
1996 TT R. A. (2000) Decl. Delta r Elong. Phase m1
Jan. 23 16 16.83 -15 42.5 1.374 1.183 57.4 44.5 9.4
28 16 40.99 -12 51.3 1.325 1.148 57.4 46.3 9.2
Feb. 2 17 05.81 - 9 37.8 1.285 1.118 57.2 47.8 9.0
7 17 31.10 - 6 05.6 1.257 1.093 56.8 49.0 8.9
12 17 56.65 - 2 20.0 1.241 1.074 56.3 49.8 8.8
17 18 22.21 + 1 31.9 1.237 1.062 55.6 50.2 8.7
22 18 47.53 + 5 22.6 1.246 1.055 54.9 50.1 8.7
27 19 12.37 + 9 05.0 1.267 1.055 54.1 49.5 8.7
Mar. 3 19 36.51 +12 33.5 1.297 1.062 53.3 48.4 8.8
8 19 59.77 +15 44.2 1.337 1.076 52.5 47.1 8.9
13 20 22.02 +18 35.5 1.384 1.095 51.7 45.4 9.1
18 20 43.16 +21 07.2 1.436 1.120 51.0 43.7 9.3
Total visual magnitudes: Jan. 1.84 UT, 11.3 (Y. Kushida,
Yatsugatake South Base Observatory, 0.20-m reflector); 3.54, 10.2 (A.
Hale, Cloudcroft, NM, 0.41-m reflector); 14.52, 9.4 (C. S. Morris,
Pine Mountain Club, CA, 0.26-m reflector); 17.15, 8.8 (A. R. Baransky,
Kiev, Ukraine, 0.11-m reflector); 19.21, 8.9 (W. Hasubick, Buchloe,
Germany, 25 x 100 binoculars).
(C) Copyright 1996 CBAT
1996 January 24 (6293) Brian G. Marsden
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