  We present an re-analysis of the longest timescale gravitational microlensing
event discovered to date: MACHO-99-BLG-22/OGLE-1999-BUL-32, which was
discovered by both the MACHO and OGLE microlensing alert systems. Our analysis
of this microlensing parallax event includes a likelihood analysis of the lens
position based upon a standard model of the Galactic velocity distribution, and
this implies that the lens could be a black hole of ~100 M_solar at a distance
of a few hundred parsecs in the Galactic disk or a massive stellar remnant
(black hole or neutron star) in the Galactic bulge. Our new analysis includes
data from the MACHO, GMAN, and MPS collaborations in addition to the OGLE data
used in a previous analysis by Mao et al (2002). The crucial feature that
distinguishes our analysis from that of Mao et al is an accurate constraint on
the direction of lens motion and an analysis of the implications of this
direction.
