On 11/11/2015 06:59 AM, pastorgalactico@... [guide-user] wrote:

> I wonder how to get the ephemeris of this object; WT1190F
>
> How would come represented in guide 9?
>
> Asteroid or satellite. ?

(For those wondering what WT1190F is: briefly, it's a bit of
unidentified space junk that will re-enter just south of Sri Lanka
on Friday. I've been involved a fair bit with figuring out where
and when it will hit, and what it is. More details at :

http://www.projectpluto.com/temp/wt1190f.htm

I was about to provide a long explanation of why you can't do this.
Then I figured out a way to do it.

Download this file into your Guide folder :

http://www.projectpluto.com/probes.dat

This will provide WT1190F, displayed as a satellite, for times
from November 1 until impact. The accuracy will be within a few
arcminutes for now until impact. (The error is because Guide is
assuming a simple elliptical motion around the earth. It gets a
little more accuracy by using three sets of elements; it picks the
"best" elements for the currently specified time.)

-- Bill