features for VOEvent v2.0

[Lynne Jones]

I would like to see orbital elements and ephemerides allow for uncertainties in the elements and in the ephemeris predictions. I don't know if that has already been thought of, but I know the most common source of ephemerides at the moment (the MPC) often doesn't include an ephemeris error, so thought it might be worth mentioning. 

The motivation (I'm imagining) is that the most common things I think you'd want to send out a VOEvent about would be newly discovered objects, where the error in the orbit and ephemeris predictions could be anywhere from very large to relatively small - depending on the amount of time from when it was last observed to the time of the ephemeris. This seems like it ought to be useful information for people attempting to follow up the object. 


On Apr 7, 2010, at 8:08 AM, Rob Seaman wrote:

> Helpfully revised per the vice-chair:
> 
> Ballot instructions - mark one-and-only-one column in each-and-every row:
> 
> 1) VOEvent v2.0:        ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 	1a) called v1.2:( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 2) time-series:         ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 3) simple tables:       ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 4) orbital elements:    ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 	4a) ephemerides:( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 5) <reference> typing:  ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 6) <param> typing:      ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 7) non-empty params:    ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 	7a) references: ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 	7b) descripts:  ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 	7c) multi-line: ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 8) physical inferences  ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 9) simple STC:          ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 10) robust schema:      ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 11) Stream template:    ( ) yes  ( ) no  ( ) don't care  ( ) don't understand
> 
> If you have comments, complaints, questions or wish to suggest features not mentioned - send a SEPARATE message (to voevent at ivoa.net).  The chair is attempting to statistically sample the WG.
> 
> First: what is the consensus?
> Second: what are we going to do about it?
> 
> Rob
>