In article ,
(Paul Schlyter) writes:
It would definitely be too small to observe in transit: the apparent
diameter of this body, when it's closest to the Earth, is expected to
be between 0.03 and 0.06 arc seconds.

Are you sure that's too small? What's the angular resolution of
solar telescopes these days? Observing a transit doesn't require
resolving the asteroid disk, only detecting the brightness decrease
it causes. That depends on signal to noise, which is probably
limited by variations in the solar surface brightness. I don't know
the numbers, but it isn't obvious to me that the observation is
impossible.

Even if a transit is observable, I'm not sure what its scientific
value would be. Presumably it would determine the asteroid diameter,
but is there much value in that? On the other hand, if a solar
telescope is observing the Sun anyway, you get the transit
observation "for free," so why not make use of it?

--
Steve Willner Phone 617-495-7123
Cambridge, MA 02138 USA
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