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EXPLORER 29 (GEOS 1), 1726

Orbit data source: Space-Track

EXPLORER 29 (GEOS 1), 1726 is a payload satellite owned by GSFC (US) in LEO that was launched on Sat, 06 Nov 1965 UTC via a THOR DELTA E 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/1726?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/1726?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

1726, 1965-089A

Orbit

LEO

Last TLE update

7 hours ago

Origin

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

APL

Mission

Civil Geodetic

Bus & Motor

ANNA, Unknown motor

Mass

176 kg wet, 176 kg dry

Launch date (UTC)

1965-11-06 (60 years ago)

Launch vehicle

THOR DELTA E

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Oct Cyl + 1 Dome + 1 Rod, 15 m

Radar Cross Section

1.519 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 7 hours ago

0 EXPLORER 29 (GEOS 1)
1 01726U 65089A   25181.87172049 -.00000072  00000-0  16283-4 0  9993
2 01726  59.3816  98.8456 0715143 351.7647  65.8723 11.97073127607602

Epoch: 2025-06-30T20:55Z

TLE epoch observation values (Epoch: 2025-06-30T20:55:16.65Z)

Latitude

51.59519°

Longitude

-86.16917°

Altitude

1,500.758 km

Speed

7.207 km/s

True Right ascension

09h 47m 18s

True Declination

51° 26' 36"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-58.97798°

Longitude

123.52153°

Altitude

1,653.807 km

Speed

7.073 km/s

Apparent Right ascension

01h 56m 33s

Apparent Declination

-54° 18' 34"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:45:11

Azimuth

137.426° SSE

Elevation

-66.821°

Doppler factor

Orbital elements

Apogee altitude

2,270.616 km

Perigee altitude

1,116.157 km

Semi-major axis

8,071.524 km

Eccentricity

0.07151

Inclination

59.3816°

RAAN

98.8456°

Arg. of periapsis

351.7647°

True anomaly

Unknown

Mean anomaly

65.8723°

Eccentric anomaly

Unknown

Mean motion

2.99302 °/min

Orbital period

120.28 mins

BSTAR

0.000016283

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Other satellites on launch #89 in the year 1965 (1965-11-06 UTC)

EXPLORER 29 (GEOS 1) 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.
23 mins	2025-07-01 05:09:46.416Z	316.891° NNW	2025-07-01 05:20:46.416Z	218.473° SW	44.051°	2025-07-01 05:32:46.416Z	153.123° SSE
15 mins	2025-07-01 07:17:46.416Z	290.255° WNW	2025-07-01 07:24:46.416Z	252.251° W	20.293°	2025-07-01 07:32:46.416Z	212.147° SW
8 mins	2025-07-01 18:46:46.416Z	137.663° SSE	2025-07-01 18:49:46.416Z	109.234° ESE	18.397°	2025-07-01 18:54:46.416Z	69.05° E
15 mins	2025-07-01 20:47:46.416Z	223.387° SW	2025-07-01 20:53:46.416Z	338.56° N	44.71°	2025-07-01 21:02:46.416Z	39.703° NE
14 mins	2025-07-01 22:54:46.416Z	287.507° WNW	2025-07-01 23:00:46.416Z	343.635° N	26.902°	2025-07-01 23:08:46.416Z	37.208° NE
15 mins	2025-07-02 01:02:46.416Z	321.308° NNW	2025-07-02 01:09:46.416Z	12.751° NNE	23.874°	2025-07-02 01:17:46.416Z	60.502° ENE
21 mins	2025-07-02 03:08:46.416Z	326.224° NNW	2025-07-02 03:17:46.416Z	33.967° NE	37.297°	2025-07-02 03:29:46.416Z	109.736° ESE

Authenticating...

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Check out EXPLORER 29 (GEOS 1), 1726 on other resources

View EXPLORER 29 (GEOS 1), 1726 on NASA - NSSDCA Website

View EXPLORER 29 (GEOS 1), 1726 on Heavens-Above

View EXPLORER 29 (GEOS 1), 1726 on Keep Track

View EXPLORER 29 (GEOS 1), 1726 on Celestrak

View EXPLORER 29 (GEOS 1), 1726 on Gunter's Space Page

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