Where are you seeing Position Angle noted for the asteroids?
It can apply to direction of motion, or its position relative to another nearby
object, OR the suspected position of a secondary "moon" object locked
gravitationally to the main minor planet.
For comets, it typically is in reference to the angle of the tail as measured
from the center of the coma.

Dr. Clay
_____
Arkansas Sky Observatories
MPC H45 - Petit Jean Mountain South
MPC H41 - Petit Jean Mountain
MPC H43 - Conway West
http://www.arksky.org/

----- Original Message -----
From: "tom" <loeblt@...>
To: <guide-user@yahoogroups.com>
Sent: Thursday, December 13, 2012 11:21 AM
Subject: [guide-user] Position Angle


> Could someone explain the meaning of position angle as it relates to
> asteroids in Guide 9?
>
> Thanks,
>
> Tom
>
>
> ------------------------------------
>
> To unsubscribe from this group, send an empty email to:
> guide-user-unsubscribe@egroups.comYahoo! Groups Links
>
>
>