Bill Thompson wrote:

Ed Cannon wrote:

At least these three others are still in orbit, all Inertial
Upper Stage vehicles:

Magellan IUS
1 19970U 89033C 04231.86902853 .00000884 00000-0 34505-3 0 2285
2 19970 27.8448 148.1258 6209025 231.5157 54.6280 3.71287104193919
Galileo IUS r 5.0 2.5 0.0 4.5 v 17
1 20299U 89084C 04236.47718732 .00196744 -14542-6 82001-3 0 3931
2 20299 34.0971 0.8441 2055500 356.0110 2.6111 11.54188165274282
Ulysses Rk
1 20843U 90090C 04232.60258109 .00002022 00000-0 90991-3 0 2773
2 20843 28.4306 320.5979 6868684 350.6587 1.3564 2.79124256134732

Thanks for posting these; I hadm't realized they were still in orbit.
I spotted the Galileo object just before dawn today. I saw it through
a 6" reflector, and it seemed bright enough to be spotted through
binoculars.

Last night it struck me that there's at least one other one up there
that launched an interplanetary flight. It's the Delta that launched
Deep Space 1 (as well as another payload, Sedsat 1):

SEDSat Delta r 5.9 2.4 0.0 5.0 d 12
1 25510U 98061C 04239.27188251 .00000275 00000-0 37887-4 0 1903
2 25510 31.4336 203.9386 0345563 192.8989 166.2602 14.32377015305259

DS1 flew by an asteroid and a comet and tested ion propulsion.

http://www.boeing.com/defense-space/...ds1success.htm

This Delta is currently making evening passes over the continental 48
states of the USA. The Galileo IUS can be seen without magnification
on near-perigee passes. I can't remember if I've seen the Magellan
or Ulysses vehicles. (I'm not very good at keeping organized records.)
I would think they also can be quite bright on near-perigee passes.

Ed Cannon - - Austin, Texas, USA
(Remove "donotspam".)