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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
14 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, 7.5 m
Radar Cross Section
1.519 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 14 hours ago
0 EXPLORER 29 (GEOS 1)
1 01726U 65089A   25199.35437340 -.00000089  00000-0 -89537-4 0  9994
2 01726  59.3811  59.5472 0715701   3.2006 166.6804 11.97072665609694
Epoch: 2025-07-18T08:30Z
TLE epoch observation values (Epoch: 2025-07-18T08:30:17.861Z)
Latitude
7.16517°
Longitude
171.31785°
Altitude
2,258.864 km
Speed
6.554 km/s
True Right ascension
15h 41m 11s
True Declination
7° 07' 48"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-45.01206°
Longitude
-149.67197°
Altitude
2,043.698 km
Speed
6.737 km/s
Apparent Right ascension
20h 41m 09s
Apparent Declination
-50° 29' 37"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
11:43:43
Azimuth
123.964° SE
Elevation
-56.742°
Doppler factor
1
Orbital elements
Apogee altitude
2,271.069 km
Perigee altitude
1,115.709 km
Semi-major axis
8,071.526 km
Eccentricity
0.07157
Inclination
59.3811°
RAAN
59.5472°
Arg. of periapsis
3.2006°
True anomaly
168.41784°
Mean anomaly
166.6804°
Eccentric anomaly
167.56351°
Mean motion
2.99302 °/min
Orbital period
120.28 mins
BSTAR
-0.000089537
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