Figure 9.
Observations of 2 Pallas
with GPI recorded
with the J, H, and K1
gratings on March
22nd during VC2 at
high airmass (>1.5).
The asteroid with an
angular diameter of
0.7” is well-resolved
and displays a potato
shape typical for a
500-km asteroid. The
surface remains mostly
featureless but detailed
analysis may confirm
a small difference in
composition between
the northern and
southern hemispheres
of the asteroid. No
moons with a diameter
larger than 0.5 km
and at less than 1.2”
were seen. Pallas
was observed with
the same geometry,
~7.8h later with the
SOFIA telescope and its
mid-IR spectrograph
called FORCAST. The
combination of these
two set of observations
could reveal the
composition of this
asteroid.
52
(IFS). Specifically, the IFS work led by James
Larkin (University California L