Re: [guide-user] Problem with "speed of apparent motion"

fb4a042@botanik.uni-hamburg.de Jul 28, 2000

> I select an asteroid (2000 LB12 at 29 Jul 2000) click right mouse
> select "display" -> "option" and set "line of variation"
> to 0.041666 days (1 hour).
> Then with right mouse I misure the track as is 2.6'
> Then click righ mouse and select "more info", I see that
> speed of apparent motion is about 28"/hour.
>
> Have I wrong something ? or is there a bug ?

Without having checked this case, I suspect that everything is ok.

The length of the line of variation does not transfer directly
into the speed of the asteroid. Rather it is the effect
a minor change of PERIHELON TIME will have on the position
of the object in the sky. This is not the same thing.

Hartwig


H. Luethen
h.luthen@...-hamburg.de
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