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EXPLORER 30, 1738

Orbit data source: Space-Track

EXPLORER 30, 1738 is a payload satellite owned by NRL (US) in LEO that was launched on Fri, 19 Nov 1965 UTC via an SCOUT X-4 launch vehicle from the Wallops Island (WLPIS). 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/1738?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/1738?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

1738, 1965-093A

Orbit

LEO

Last TLE update

21 hours ago

Origin

United States Navy (US)

Manufacturer

NRL

Mission

Civil Astronomy

Bus & Motor

NRL 24", Unknown motor

Mass

57 kg wet, 57 kg dry

Launch date (UTC)

1965-11-19 (60 years ago)

Launch vehicle

SCOUT X-4

Launch site

Wallops Island (WLPIS)

Object type

Payload

Rocket body

Debris

Shape & HBR

Sphere, 0.61 m

Radar Cross Section

0.292 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 21 hours ago

0 EXPLORER 30
1 01738U 65093A   25166.69399419  .00000152  00000-0  85193-4 0  9990
2 01738  59.7081  51.5254 0137893  61.6266 299.8595 14.41582084103548

Epoch: 2025-06-15T16:39Z

TLE epoch observation values (Epoch: 2025-06-15T16:39:21.098Z)

Latitude

-0.00003°

Longitude

-102.52794°

Altitude

706.857 km

Speed

7.528 km/s

True Right ascension

03h 26m 06s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

26.42218°

Longitude

57.76564°

Altitude

747.973 km

Speed

7.488 km/s

Apparent Right ascension

13h 11m 25s

Apparent Declination

-4° 49' 56"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

23:58:06

Azimuth

329.979° NNW

Elevation

-51.218°

Doppler factor

Orbital elements

Apogee altitude

850.876 km

Perigee altitude

654.222 km

Semi-major axis

7,130.686 km

Eccentricity

0.01379

Inclination

59.7081°

RAAN

51.5254°

Arg. of periapsis

61.6266°

True anomaly

Unknown

Mean anomaly

299.8595°

Eccentric anomaly

Unknown

Mean motion

3.60451 °/min

Orbital period

99.87 mins

BSTAR

0.000085193

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Other satellites on launch #93 in the year 1965 (1965-11-19 UTC)

SCOUT X-4 R/B, 1739

SCOUT X-4 DEB, 2013 (Decayed)

SCOUT X-4 DEB, 2088

EXPLORER 30 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.
8 mins	2025-06-16 17:45:19.547Z	189.993° SSW	2025-06-16 17:49:19.547Z	120.801° SE	33.224°	2025-06-16 17:53:19.547Z	54.663° ENE
6 mins	2025-06-16 19:30:19.547Z	275.21° WNW	2025-06-16 19:32:19.547Z	311.04° NW	25.176°	2025-06-16 19:36:19.547Z	17.534° NNE
5 mins	2025-06-17 00:47:19.547Z	9.816° NNE	2025-06-17 00:49:19.547Z	41.449° NE	17.973°	2025-06-17 00:52:19.547Z	78.81° E
8 mins	2025-06-17 02:29:19.547Z	318.378° NNW	2025-06-17 02:32:19.547Z	298.795° NW	43.828°	2025-06-17 02:37:19.547Z	145.041° SSE

Authenticating...

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Check out EXPLORER 30, 1738 on other resources

View EXPLORER 30, 1738 on NASA - NSSDCA Website

View EXPLORER 30, 1738 on Heavens-Above

View EXPLORER 30, 1738 on Keep Track

View EXPLORER 30, 1738 on Celestrak

View EXPLORER 30, 1738 on Gunter's Space Page

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