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ORSTED, 25635

Orbit data source: Space-Track

ORSTED, 25635 is a payload satellite owned by DMI (DK) in SSO that was launched on Tue, 23 Feb 1999 UTC via a DELTA 7920-10 launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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<iframe src="https://www.satcat.com/sats-embedded/25635?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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https://www.satcat.com/sats-embedded/25635?theme=dark&initialShowStats=false

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Identifier

25635, 1999-008B

Orbit

SSO

Country

DK / DEN

Related business

Danish Meteorological Institute (DK)

Manufacturer

Terma/Birkerod

Mission

Non-operational Civil Science

Bus & Motor

ORSTED, Unknown motor

Mass

62 kg wet, 62 kg dry

Launch date (UTC)

1999-02-23 (27 years ago)

Launch vehicle

DELTA 7920-10

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Rod, Unknown HBR

Radar Cross Section

0.525 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 ORSTED
1 25635U 99008B   26154.25852356  .00000454  00000-0  10867-3 0  9999
2 25635  96.4833  64.9368 0130539 230.8566 128.0975 14.51795905439940

Epoch: 2026-06-03T06:12Z

TLE epoch observation values (Epoch: 2026-06-03T06:12:16.435Z)

Latitude

-0.00005°

Longitude

80.14861°

Altitude

780.731 km

Speed

7.433 km/s

True Right ascension

04h 19m 44s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

21:11:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

809.426 km

Perigee altitude

624.193 km

Semi-major axis

7,094.947 km

Eccentricity

0.01305

Inclination

96.4833°

RAAN

64.9368°

Arg. of periapsis

230.8566°

True anomaly

129.26287°

Mean anomaly

128.0975°

Eccentric anomaly

128.68136°

Mean motion

3.63178 °/min

Orbital period

99.12 mins

BSTAR

0.00010867

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Other satellites on launch #8 in the year 1999 (1999-02-23 UTC)

DELTA 2 R/B, 25637

DELTA 2 DEB, 39737 (Decayed)

DELTA 2 DEB, 39734 (Decayed)

DELTA 2 DEB, 39736 (Decayed)

DELTA 2 DEB, 39735 (Decayed)

SUNSAT, 25636

DELTA 2 DEB, 39739 (Decayed)

ARGOS, 25634

DELTA 2 DEB, 39738 (Decayed)

DELTA 2 DEB, 39740 (Decayed)

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ORSTED Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
9 mins	2026-06-05 17:52:10.228Z	157.612° S	2026-06-05 17:57:10.228Z	42.933° NE	42.347°	2026-06-05 18:01:10.228Z	355.657° N
4 mins	2026-06-05 19:34:10.228Z	256.551° W	2026-06-05 19:35:10.228Z	268.789° W	13.776°	2026-06-05 19:38:10.228Z	303.465° NW
6 mins	2026-06-06 05:57:10.228Z	51.978° ENE	2026-06-06 05:59:10.228Z	85.479° E	23.093°	2026-06-06 06:03:10.228Z	146.926° SSE
6 mins	2026-06-06 07:35:10.228Z	337.564° N	2026-06-06 07:38:10.228Z	279.85° WNW	26.995°	2026-06-06 07:41:10.228Z	233.061° WSW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out ORSTED, 25635 on other resources

View ORSTED, 25635 on NASA - NSSDCA Website

View ORSTED, 25635 on Heavens-Above

View ORSTED, 25635 on Keep Track

View ORSTED, 25635 on Celestrak

View ORSTED, 25635 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

ORSTED, 25635

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-03T06:12:16.435Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #8 in the year 1999 (1999-02-23 UTC)

ORSTED Visibility forecast

Co-orbital & Co-planar RSOs

Check out ORSTED, 25635 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago