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THEMIS E, 30798

Orbit data source: Space-Track

THEMIS E, 30798 is a payload satellite owned by GSFC (US) in HEO that was launched on Sat, 17 Feb 2007 UTC via a DELTA 7925-10C launch vehicle from the Air Force Eastern Test Range (AFETR). 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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https://www.satcat.com/sats-embedded/30798?theme=dark&initialShowStats=false

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Identifier

30798, 2007-004E

Orbit

HEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Swales

Mission

Operational Civil Science

Bus & Motor

ATK-A100, Unknown motor

Mass

125 kg wet, 76 kg dry

Launch date (UTC)

2007-02-17 (19 years ago)

Launch vehicle

DELTA 7925-10C

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 6 Rod, 24.5 m

Radar Cross Section

0.720 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 6 days ago

TLE from 6 days ago

0 THEMIS E
1 30798U 07004E   26169.54314664 -.00000327  00000-0  00000-0 0  9998
2 30798   6.3692  98.0709 8440072 215.6799 161.0349  0.88041867 65931

Epoch: 2026-06-18T13:02Z

TLE epoch observation values (Epoch: 2026-06-18T13:02:07.869Z)

Latitude

3.44631°

Longitude

28.19579°

Altitude

77,829.09 km

Speed

0.894 km/s

True Right ascension

08h 42m 03s

True Declination

3° 26' 40"

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

22:41:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

78,428.422 km

Perigee altitude

796.028 km

Semi-major axis

45,990.362 km

Eccentricity

0.84401

Inclination

6.3692°

RAAN

98.0709°

Arg. of periapsis

215.6799°

True anomaly

176.99385°

Mean anomaly

161.0349°

Eccentric anomaly

169.68985°

Mean motion

0.22006 °/min

Orbital period

1,635.91 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #4 in the year 2007 (2007-02-17 UTC)

DELTA 2 R/B(2), 30799 (Decayed)

THEMIS A, 30580

THEMIS D, 30797

ARTEMIS P2 (THEMIS C), 30582

ARTEMIS P1 (THEMIS B), 30581

DELTA 2 R/B(1), 30585 (Decayed)

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THEMIS E 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.
181 mins	2026-06-24 21:35:57.403Z	243.589° WSW	2026-06-24 22:43:57.403Z	244.662° WSW	16.943°	2026-06-25 00:36:57.403Z	257.143° W

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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 THEMIS E, 30798 on other resources

View THEMIS E, 30798 on NASA - NSSDCA Website

View THEMIS E, 30798 on Heavens-Above

View THEMIS E, 30798 on Keep Track

View THEMIS E, 30798 on Celestrak

View THEMIS E, 30798 on Gunter's Space Page

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

THEMIS E, 30798

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 days ago

TLE from 6 days ago

TLE epoch observation values (Epoch: 2026-06-18T13:02:07.869Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #4 in the year 2007 (2007-02-17 UTC)

THEMIS E Visibility forecast

Co-orbital & Co-planar RSOs

Check out THEMIS E, 30798 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 days ago