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SatelliteIndex

Satellite · NORAD 25994 · COSPAR 1999-068A

TERRA

InactivePayloadLEOEarth observation derived

Altitude now

703.0km

SGP4 propagation

Velocity

7.51km/s

Inclination

97.94°

Period

98.6 min

98.6 min

Perigee

688km

Apogee

691km

orbit freshOrbit updated 8 h ago · element epoch 11 Sept 2026 14:18 UTC (6.3 h old)· Metadata updated 8 h ago

Live position

Ground track & current position

Propagated client-side every 5 s from the latest element set (SGP4). Accuracy degrades with element age.

Ground track of TERRATERRA
LIVE · SGP4

Loading ground track…

Latitude
80.414° N
Longitude
123.607° W
Altitude
703.0 km
Velocity
7.511 km/s
  • past 45 min
  • next 90 min
  • first fix from server render · element epoch 11 Sept 2026 14:18 UTC

Mission

Mission & classification

Mission type derived
Earth observation
Object type
Payload
SATCAT ops status
Extended mission [X]
Radar cross-section
12.4 m²

CelesTrak groups

Aliases

  • TERRACelestrak

Ownership

Operator & country

Operator
—
SATCAT owner code
US · United States
Country
United States US

Launch

Launch

Launch page →
Launch date
18 Dec 1999
COSPAR launch id
1999-068
Launch site
Vandenberg Space Force Base (Western Range), California

Objects from the same launch · 1

Change log

History

FieldChangeSourceDate
StatusACTIVE → INACTIVECelestrak Satcat11 Sept 2026 18:53 UTC
Country Code∅ → USCelestrak Satcat11 Sept 2026 18:53 UTC
Owner Code∅ → USCelestrak Satcat11 Sept 2026 18:53 UTC
Orbit Class∅ → LEOCelestrak11 Sept 2026 18:53 UTC

Regulatory

UN registration

UN Register of Objects Launched into Outer Space (UNOOSA) — connector planned, not yet ingested; registration unavailable

Transparency

Sources & provenance

All sources →

  • CelesTrakcommunity

    Orbital data courtesy of CelesTrak (Dr. T.S. Kelso).

    last sync 8 h ago

  • CelesTrak SATCATcommunity

    Satellite catalog data courtesy of CelesTrak.

    last sync 8 h ago

Field provenance

FieldSourceObservedConfidence
Canonical NameCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Decay DateCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Launch DateCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Object TypeCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
Orbital ElementsCelesTrak11 Sept 2026 18:53 UTC100%
Owner CodeCelesTrak SATCAT11 Sept 2026 18:53 UTC100%
StatusCelesTrak SATCAT11 Sept 2026 18:53 UTC100%

Quality flags

  • UNKNOWN_OPERATORactive payload without resolved operator11 Sept 2026

Timeline

Events

All events →

  1. 11 Sept 2026 18:53 UTC

    DecommissionTERRA reported inactive

    SATCAT status changed ? → X.

    confidence 80%

Reference

Identifiers

NORAD catalogue number
25994
COSPAR / international designator
1999-068A
SatelliteIndex id
sat_01M28X2SWT01QM2JGQ9QTBM23N
Canonical slug
terra-25994

Orbit class, mission type and constellation membership are derived by SatelliteIndex (Earth observation) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.