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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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Identifier
1726, 1965-089A
Orbit
LEO
Last TLE update
15 hours ago
Origin
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 15 hours ago
0 EXPLORER 29 (GEOS 1)
1 01726U 65089A   25166.91329824 -.00000073  00000-0  72483-5 0  9992
2 01726  59.3796 132.4683 0714628 341.9669  43.1351 11.97073316605815
Epoch: 2025-06-15T21:55Z
TLE epoch observation values (Epoch: 2025-06-15T21:55:08.967Z)
Latitude
26.43554°
Longitude
-83.72609°
Altitude
1,295.563 km
Speed
7.388 km/s
True Right ascension
09h 57m 58s
True Declination
26° 18' 30"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-13.61336°
Longitude
86.04752°
Altitude
2,166.801 km
Speed
6.63 km/s
Apparent Right ascension
19h 04m 51s
Apparent Declination
-49° 59' 18"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
23:35:22
Azimuth
218.611° SW
Elevation
-17.683°
Doppler factor
1
Orbital elements
Apogee altitude
2,270.2 km
Perigee altitude
1,116.572 km
Semi-major axis
8,071.523 km
Eccentricity
0.07146
Inclination
59.3796°
RAAN
132.4683°
Arg. of periapsis
341.9669°
True anomaly
Unknown
Mean anomaly
43.1351°
Eccentric anomaly
Unknown
Mean motion
2.99302 °/min
Orbital period
120.28 mins
BSTAR
0.0000072483
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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.
10 mins2025-06-16 21:55:38.910Z149.827° SSE2025-06-16 22:00:38.910Z107.176° ESE18.958°2025-06-16 22:05:38.910Z68.73° E
16 mins2025-06-16 23:57:38.910Z221.925° SW2025-06-17 00:04:38.910Z357.252° N44.7°2025-06-17 00:13:38.910Z39.804° NE
15 mins2025-06-17 02:04:38.910Z282.302° WNW2025-06-17 02:11:38.910Z343.569° N28.049°2025-06-17 02:19:38.910Z36.479° NE
16 mins2025-06-17 04:13:38.910Z320.931° NNW2025-06-17 04:20:38.910Z10.881° NNE24.761°2025-06-17 04:29:38.910Z62.395° ENE
22 mins2025-06-17 06:19:38.910Z325.711° NNW2025-06-17 06:29:38.910Z42.061° NE37.51°2025-06-17 06:41:38.910Z110.224° ESE
23 mins2025-06-17 08:25:38.910Z314.147° NW2025-06-17 08:35:38.910Z238.66° WSW42.675°2025-06-17 08:48:38.910Z159.2° S
13 mins2025-06-17 10:33:38.910Z285.909° WNW2025-06-17 10:39:38.910Z255.628° W16.927°2025-06-17 10:46:38.910Z221.813° SW
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