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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
10 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 10 hours ago
0 EXPLORER 29 (GEOS 1)
1 01726U 65089A   25181.56422888 -.00000073  00000-0  63610-5 0  9996
2 01726  59.3816  99.5368 0715134 351.5641 180.7485 11.97073096607566
Epoch: 2025-06-30T13:32Z
TLE epoch observation values (Epoch: 2025-06-30T13:32:29.375Z)
Latitude
6.65111°
Longitude
153.60246°
Altitude
2,271.935 km
Speed
6.543 km/s
True Right ascension
18h 22m 23s
True Declination
6° 37' 07"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
-43.82826°
Longitude
-168.99625°
Altitude
1,952.033 km
Speed
6.814 km/s
Apparent Right ascension
22h 04m 05s
Apparent Declination
-43° 45' 22"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
11:33:26
Azimuth
110.337° ESE
Elevation
-72.976°
Doppler factor
1
Orbital elements
Apogee altitude
2,270.609 km
Perigee altitude
1,116.165 km
Semi-major axis
8,071.524 km
Eccentricity
0.07151
Inclination
59.3816°
RAAN
99.5368°
Arg. of periapsis
351.5641°
True anomaly
Unknown
Mean anomaly
180.7485°
Eccentric anomaly
Unknown
Mean motion
2.99302 °/min
Orbital period
120.28 mins
BSTAR
0.000006361
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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.
16 mins2025-07-01 00:57:42.996Z314.467° NW2025-07-01 01:04:42.996Z4.139° NNE23.245°2025-07-01 01:13:42.996Z57.871° ENE
20 mins2025-07-01 03:05:42.996Z329.974° NNW2025-07-01 03:13:42.996Z33.777° NE35.019°2025-07-01 03:25:42.996Z104.19° ESE
22 mins2025-07-01 05:10:42.996Z316.314° NNW2025-07-01 05:20:42.996Z220.631° SW44.07°2025-07-01 05:32:42.996Z153.15° SSE
15 mins2025-07-01 07:17:42.996Z290.499° WNW2025-07-01 07:24:42.996Z252.596° W20.292°2025-07-01 07:32:42.996Z212.355° SW
8 mins2025-07-01 18:46:42.996Z138.137° SSE2025-07-01 18:49:42.996Z109.804° ESE18.389°2025-07-01 18:54:42.996Z69.368° E
15 mins2025-07-01 20:47:42.996Z223.339° SW2025-07-01 20:53:42.996Z331.898° NNW44.739°2025-07-01 21:02:42.996Z39.675° NE
14 mins2025-07-01 22:54:42.996Z287.163° WNW2025-07-01 23:00:42.996Z343.008° N26.919°2025-07-01 23:08:42.996Z37.017° NE
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