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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 URL

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

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ISO8601 Format

Identifier

22, 1959-009A

Orbit

LEO

Last TLE update

13 hours ago

Origin

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

ABMA

Mission

Civil Science

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

Cone + Cone, 0.4 m

Radar Cross Section

0.454 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 13 hours ago

0 EXPLORER 7
1 00022U 59009A   25221.50398969  .00013667  00000-0  57203-3 0  9991
2 00022  50.2707 191.3450 0089832 315.6431  43.7353 15.20168971752798

Epoch: 2025-08-09T12:05Z

TLE epoch observation values (Epoch: 2025-08-09T12:05:44.709Z)

Latitude

-0.00007°

Longitude

51.66991°

Altitude

461.505 km

Speed

7.662 km/s

True Right ascension

12h 45m 22s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-15.9746°

Longitude

35.43696°

Altitude

451.704 km

Speed

7.674 km/s

Apparent Right ascension

08h 28m 49s

Apparent Declination

-50° 28' 28"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:52:09

Azimuth

229.013° WSW

Elevation

-32.992°

Doppler factor

Orbital elements

Apogee altitude

567.899 km

Perigee altitude

444.214 km

Semi-major axis

6,884.194 km

Eccentricity

0.00898

Inclination

50.2707°

RAAN

191.345°

Arg. of periapsis

315.6431°

True anomaly

44.45275°

Mean anomaly

43.7353°

Eccentric anomaly

44.09344°

Mean motion

3.79982 °/min

Orbital period

94.74 mins

BSTAR

0.00057203

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

JUNO II R/B, 23 (Decayed)

EXPLORER 7 Visibility forecast

Observer location: undefined°, undefined°

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.
7 mins	2025-08-10 00:53:36.590Z	221.494° SW	2025-08-10 00:56:36.590Z	173.883° S	40.664°	2025-08-10 01:00:36.590Z	61.026° ENE
5 mins	2025-08-10 02:34:36.590Z	302.369° NW	2025-08-10 02:35:36.590Z	326.252° NNW	25.484°	2025-08-10 02:39:36.590Z	41.549° NE
4 mins	2025-08-10 04:14:36.590Z	335.899° NNW	2025-08-10 04:15:36.590Z	354.458° N	17.918°	2025-08-10 04:18:36.590Z	43.778° NE
5 mins	2025-08-10 05:53:36.590Z	333.207° NNW	2025-08-10 05:55:36.590Z	16.883° NNE	26.593°	2025-08-10 05:58:36.590Z	76.072° E
6 mins	2025-08-10 07:32:36.590Z	295.143° NW	2025-08-10 07:34:36.590Z	246.589° WSW	42.332°	2025-08-10 07:38:36.590Z	136.372° SSE

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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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.