Finding Jupiter's Moons
Jupiter has 4 large moons which can be seen witha binoculars (and even
with the naked eye if the night is just right).
The KAO observes Jupiter and its moons during the daytime on October 12,
1995. The astronomer operating telescope will be able to see Jupiter through
the telescope, but maybe not the moons. The IR detector, however, wll
'see' the moons in infrared where they are brighter than the surrounding
The order of moons outward from Jupiter is Io, Europa, Ganymede, and
These moons are in constant orbital motion around Jupiter --each moving
at its own speed based upon its distance from Jupiter. (i) and (ii) show
the locations of the moons before -and after the KAO flight.
The KAO begins observing Jupiter's moons -around 16:00 hrs--4 p.m. EDT
on October 12, 1995. On figure (iii), draw where the moons will be at
16:00. EDT (20 hr. UT) just before the observing run begins. (HINT)-.
This time is halfway between where the moons were at 12 hr. UT on Oct
12 and where they will be at 4 hr. UT Oct 13)
*Please note how KAO's detector changes the normal placement of East
and West. This is routine for astronomers.
- Which moons will be to the West of jupiter?
- Which moons will be to the East of jupiter? *
- What happens to lo at midnight on Oct. 12th, as seen from Earth?