Well, most are very far away out of radar range, beyond Jupiter and indeed
the black paint does have a low radar reflectivity.

I do not understand if or why the do or do not emitt in the IR as they are
likely to be quite hot. I would have thought they would be glaringly
obvious in the IR. Since there engines emit up to 10^17 watts in the 2 GHz
radio spectrum then this, too, should be glaringly obvious.

It could be that you are just not paying attention.

Or pass your observation off as a natural object.

Chris.

"Mike Williams" wrote in message
...
Wasn't it Chris who wrote:
Hello,

There are dozens if not hundreds of star ships in the solar system. They
cannot easily be seen because of stealth. They are painted black to most
of
the spectrum. You might glimpse one if it occulted a star you were
looking
at, but they are small, only up to 100 meters in diameter.

I understand there are five ships in geostationary orbit it was these that
have slightly altered history here on Earth recently. These are quite
small
and are only likely to be visible if one partially occulted the moons disc
during a telescopic observation or winked a star.

100 metres in diameter is huge compared with the size of things that the
NORAD radar system tracks. Their radar stealth would have to be pretty
magic to avoid being glaringly obvious.

Their black paint would also have to be seriously magic to avoid
emissions in every wavelength that astronomers use. The ships would have
to emit significant amounts of radiation in some part of the spectrum to
avoid overheating.

Lunar transits would certainly be spotted by amateur astronomers. They'd
be very distinctive because they'd be much slower than any other lunar
transit by a large object (low satellites and aircraft). A satellite in
Low Earth Orbit transits the Moon in under 8 seconds, but a
geostationary craft transit would last about 2 minutes.

--
Mike Williams
Gentleman of Leisure