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EXPLORER 7, 22

Orbit data source: Space-Track

EXPLORER 7, 22 is a payload satellite owned by GSFC (US) in LEO that was launched on Tue, 13 Oct 1959 UTC via a JUNO II 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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<iframe src="https://www.satcat.com/sats-embedded/22?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/22?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

22, 1959-009A

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

ABMA

Mission

Spacecraft

Bus & Motor

S-1, Unknown motor

Mass

41 kg wet, 41 kg dry

Launch date (UTC)

1959-10-13 (66 years ago)

Launch vehicle

JUNO II

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago

0 EXPLORER 7
1 00022U 59009A   26070.88753822  .00017786  00000-0  61755-3 0  9991
2 00022  50.2410 220.5530 0080640  93.0094 268.0097 15.26727846785479

Epoch: 2026-03-11T21:18Z

TLE epoch observation values (Epoch: 2026-03-11T21:18:03.302Z)

Latitude

-0.00002°

Longitude

91.49389°

Altitude

488.551 km

Speed

7.621 km/s

True Right ascension

14h 42m 12s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

08:38:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

541.69 km

Perigee altitude

430.98 km

Semi-major axis

6,864.472 km

Eccentricity

0.00806

Inclination

50.241°

RAAN

220.553°

Arg. of periapsis

93.0094°

True anomaly

267.08655°

Mean anomaly

268.0097°

Eccentric anomaly

267.54809°

Mean motion

3.81621 °/min

Orbital period

94.33 mins

BSTAR

0.00061755

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Other satellites on launch #9 in the year 1959 (1959-10-13 UTC)

JUNO II R/B, 23 (Decayed)

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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

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EXPLORER 7 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.
5 mins	2026-03-12 13:13:54.716Z	246.179° WSW	2026-03-12 13:15:54.716Z	3.625° NNE	42.985°	2026-03-12 13:18:54.716Z	51.82° ENE
5 mins	2026-03-12 18:10:54.716Z	329.826° NNW	2026-03-12 18:12:54.716Z	26.034° NE	28.987°	2026-03-12 18:15:54.716Z	91.717° ESE
4 mins	2026-03-12 19:49:54.716Z	265.813° W	2026-03-12 19:50:54.716Z	235.331° WSW	28.461°	2026-03-12 19:53:54.716Z	160.006° S

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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 EXPLORER 7, 22 on other resources

View EXPLORER 7, 22 on NASA - NSSDCA Website

View EXPLORER 7, 22 on Heavens-Above

View EXPLORER 7, 22 on Keep Track

View EXPLORER 7, 22 on Celestrak

View EXPLORER 7, 22 on Gunter's Space Page

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

EXPLORER 7, 22

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-03-11T21:18:03.302Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #9 in the year 1959 (1959-10-13 UTC)

EXPLORER 7 Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXPLORER 7, 22 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 7 hours ago