Showing default

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.

Loading next visibility...

Iframe embed code

<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

Optional secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

1738, 1965-093A

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

NRL

Mission

Spacecraft

Bus & Motor

NRL 24", Unknown motor

Mass

57 kg wet, 57 kg dry

Launch date (UTC)

1965-11-19 (61 years ago)

Launch vehicle

SCOUT X-4

Launch site

Wallops Island (WLPIS)

Object type

Payload

Rocket body

Debris

Shape & HBR

SPHERE, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 23 hours ago

TLE from 23 hours ago

0 EXPLORER 30
1 01738U 65093A   26317.91694571  .00000183  00000-0  93862-4 0  9997
2 01738  59.7065  95.4496 0130830 168.8744 191.5238 14.41890067177984

Epoch: 2026-11-13T22:00Z

TLE epoch observation values (Epoch: 2026-11-13T22:00:24.109Z)

Latitude

0.00004°

Longitude

72.31996°

Altitude

845.233 km

Speed

7.383 km/s

True Right ascension

06h 21m 47s

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

17:53:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

844.811 km

Perigee altitude

658.256 km

Semi-major axis

7,129.671 km

Eccentricity

0.01308

Inclination

59.7065°

RAAN

95.4496°

Arg. of periapsis

168.8744°

True anomaly

191.22902°

Mean anomaly

191.5238°

Eccentric anomaly

191.37594°

Mean motion

3.60528 °/min

Orbital period

99.85 mins

BSTAR

0.000093862

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

SCOUT X-4 DEB, 2088

SCOUT X-4 R/B, 1739

SCOUT X-4 DEB, 2013 (Decayed)

Did you know?

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

Click here to try in Sandbox

EXPLORER 30 Visibility forecast

Loading observer location...
Set Observer location

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.
10 mins	2026-11-15 10:44:19.541Z	199.807° SSW	2026-11-15 10:49:19.541Z	139.503° SSE	53.447°	2026-11-15 10:54:19.541Z	49.806° ENE
7 mins	2026-11-15 12:30:19.541Z	274.104° WNW	2026-11-15 12:33:19.541Z	320.779° NNW	29.566°	2026-11-15 12:37:19.541Z	17.592° NNE
6 mins	2026-11-15 17:47:19.541Z	356.961° N	2026-11-15 17:49:19.541Z	26.296° NE	21.138°	2026-11-15 17:53:19.541Z	82.766° E
7 mins	2026-11-15 19:30:19.541Z	313.67° NW	2026-11-15 19:33:19.541Z	260.735° W	68.454°	2026-11-15 19:37:19.541Z	152.13° SSE

Items per page:

1–4 of 4 items

of 1 page

Co-orbital & Co-planar RSOs

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

Please sign in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

Authenticating...

Click to sort rows by Event ID header in ascending order	Click to sort rows by Pc header in ascending order	Click to sort rows by Md header in ascending order	Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by TCA header in descending order

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.

EXPLORER 30, 1738

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 23 hours ago

TLE from 23 hours ago

TLE epoch observation values (Epoch: 2026-11-13T22:00:24.109Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

EXPLORER 30 Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXPLORER 30, 1738 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 23 hours ago