View Single Post
  #22  
Old 22-06-2011, 10:44 AM
ngcles's Avatar
ngcles
The Observologist

ngcles is offline
 
Join Date: Dec 2006
Location: Billimari, NSW Central West
Posts: 1,664
Hi Andrew,

Quote:
Originally Posted by mithrandir View Post
Les, my understanding is that unless the eccentricity drops it will be a one-timer. MPEC say 1.0 but that is rounded. JPL has had 1.0004 or higher ever since they dropped the warning about limited observations.

Once e is established to be below 1.0 don't they relabel C/ as P/ ?

Andrew
Not certain as to when they re-designate Andrew but with the orbital elements jumping around quite a bit until a longer track is observed it's
probably too early to say with great certainty.

True, e=1.0 at the moment (so the orbit appears parabolic implying a once-only pass) but figures might change so we'll know more certainly whether it is a first-timer or not in a few weeks I guess.


Best,

Les D
Reply With Quote