The Distant Artificial Satellites Observation Page

This page (formerly titled the Earth-Orbiting Space Junk Tracker Page) allows observers to get ephemerides for man-made objects in orbit around the earth (or a dynamical point associated with the earth) that have been (or could be) confused with natural objects.

Astrometry of these objects should be reported to both and (with subject line = "ART SAT") in the normal format, with the designation beginning in column 1 and extending no further than column 12 (names that are longer than twelve characters should be truncated). Observations are published in the Distant Artificial Satellites Observation circular.

Use the FeedBack form to make comments or report problems with this service.

Select object(s) from the list of available objects:
1965-058A (Vela 3A) 2011-037A (SPEKTR-R)
INTEGRAL 2010-050B
Geotail 1973-078A (IMP8)
9O0DC57 1972-073A (IMP7)
1969-046F; Vela 5A/5B booster 2008-051A
1983-020A 1983-020D
SA82DAA 2011-037B
1967-040A 2013-070B
2015-007B GAIA
1976-023C XE9C2B4
S510125 S510126
S509356 1999-066A
S509559 S509575
2009-068B XL8D89E
S510599 S510923
S510942 XW99CEC

Ephemeris options:

Start date (YYYY MM DD.ddddd format, default is now)

Make start date a multiple of the ephemeris interval

For daily ephemerides, enter desired offset from 0h UT: hours

Number of dates to output

Ephemeris interval: 1 day 12 hours 6 hours 2 hours 1 hour 30 mins 10 mins 1 min

Display positions in: truncated sexagesimal or full sexagesimal or decimal units

Display motions as: "/sec, "/min, "/hr or °/day.

Total motion and direction Separate R.A. and Decl. coordinate motions Separate R.A. and Decl. sky motions

Suppress output if sun above local horizon

Suppress output if object below local horizon

Full output Brief output

Select your viewing point:

Geocentric Observatory code

Longitude ° E, latitude °, altitude m.

Longitudes and latitudes should be entered in decimal degrees.

Note: When local circumstances are displayed, the azimuths are reckoned westwards from the south meridian.

Sources of Data

Ephemeris data used in this service may be obtained from:
internal MPC calculations,
the Satellite Situation Center,
JPL's Horizons
Bill Gray of Project Pluto
and Dale Fink (WMAP Operations).

This service is made possible by the
Tamkin Foundation Computer Network