Hi Adam,

I searched in vain for the message I "knew" I'd posted on
this subject, about a year ago... here's what it would have
said, had I found that post:

You can download this file (about 90 KBytes)

http://www.projectpluto.com/stereo.zip

and see STEREO-A and STEREO-B, added as interplanetary probes.
They are controlled as "satellites". Of course, right now, they're
_extremely_ faint, and won't show up unless you either turn
satellites On or set an absurdly faint magnitude limit.

You can then use Go To... Object Name and enter STEREO-A or
STEREO-B. You can then hit '<' to cause Guide to reset your
point of view to that probe.

-- Bill