Quote:
Originally Posted by August
Well technically it might be possible but it's a very big sky. What do you think are the odds of such an object being discovered in the late 1800's or even now?
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For today check out what Ken Burnside wrote on project rho:
http://www.projectrho.com/public_htm...eat_Signatures
For the past Burnside mentions a drive system of a spaceborne warship at a decent distance would be about an Apparent Magnitude of 12, which would put it just below the Apparent Magnitude of Iapetus (which was discovered in 1671). In the early and mid 1700s they were finding asteroids with apparent magnitudes in that region (ex: 3 Juno, and 5 Astraea).