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IAUC 5997: OPTICAL GRAVTATIONAL LENSING EXPERIMENT (OGLE); 1993 FW; 1994f

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                                                  Circular No. 5997
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


OPTICAL GRAVTATIONAL LENSING EXPERIMENT (OGLE)
     B. Paczynski, Princeton University Observatory, writes:
"During June 7-Sept. 15, about 2 million stars in the Galactic
Bulge will be monitored by the OGLE, and we expect that 2-4
microlensing events, each lasting a few weeks, will be discovered.
The new computer system automatically signals the events while they
are on the rise, making it possible to carry out photometric and/or
spectroscopic follow-up observations.  If you would like to be
notified about on-going events, please send your request to A.
Udalski (udalski@sirius.astrouw.edu.pl).  More information can be
obtained over Internet via 'sirius.astrouw.edu.pl' by anonymous
ftp (directory '/ogle', file 'early.warning')."


1993 FW
     J. Davies, Joint Astronomy Centre, Hilo, reports that a search
for 1993 FW on Apr. 27.35 UT with the new infrared camera IRCAM3 at
the U.K. Infrared Telescope did not detect the object (ephemeris on
IAUC 5939):  "In a 2" software aperture, the deduced 5-sigma upper
limit at J is 22.0.  Combining this with an estimated V magnitude
of 23.3 implies a V-J color of < +1.5, less extreme than both (5145)
Pholus (V-J = +2.46; Davies et al. 1993, Icarus 102, 166) and 1993
HA2 (V-J = +2.0 +/- 0.2; unpublished).  Since this implies that
some Kuiper-belt objects may be less red than Pholus and 1993 HA2,
further observations are urgently required."


COMET TAKAMIZAWA-LEVY (1994f)
     Extension to ephemeris on IAUC 5985:

1994 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
June  1    17 06.40   +69 27.6   0.945   1.366   88.4   47.9    8.2
      3    16 18.1    +70 13.0   0.968   1.370   87.4   47.7    8.3
      5    15 30.8    +70 06.5   0.994   1.374   86.3   47.5    8.4
      7    14 48.29   +69 16.6   1.025   1.378   85.0   47.2    8.4
      9    14 12.43   +67 55.4   1.059   1.383   83.6   46.8    8.5
     11    13 43.27   +66 14.7   1.097   1.389   82.1   46.4    8.6
     13    13 19.91   +64 23.5   1.137   1.396   80.6   45.9    8.7
     15    13 01.25   +62 28.2   1.180   1.402   79.0   45.3    8.8
     17    12 46.26   +60 32.9   1.225   1.410   77.4   44.7    8.9


1994 May 25                    (5997)            Daniel W. E. Green

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