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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

10 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 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

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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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.
16 mins	2025-07-01 00:57:42.996Z	314.467° NW	2025-07-01 01:04:42.996Z	4.139° NNE	23.245°	2025-07-01 01:13:42.996Z	57.871° ENE
20 mins	2025-07-01 03:05:42.996Z	329.974° NNW	2025-07-01 03:13:42.996Z	33.777° NE	35.019°	2025-07-01 03:25:42.996Z	104.19° ESE
22 mins	2025-07-01 05:10:42.996Z	316.314° NNW	2025-07-01 05:20:42.996Z	220.631° SW	44.07°	2025-07-01 05:32:42.996Z	153.15° SSE
15 mins	2025-07-01 07:17:42.996Z	290.499° WNW	2025-07-01 07:24:42.996Z	252.596° W	20.292°	2025-07-01 07:32:42.996Z	212.355° SW
8 mins	2025-07-01 18:46:42.996Z	138.137° SSE	2025-07-01 18:49:42.996Z	109.804° ESE	18.389°	2025-07-01 18:54:42.996Z	69.368° E
15 mins	2025-07-01 20:47:42.996Z	223.339° SW	2025-07-01 20:53:42.996Z	331.898° NNW	44.739°	2025-07-01 21:02:42.996Z	39.675° NE
14 mins	2025-07-01 22:54:42.996Z	287.163° WNW	2025-07-01 23:00:42.996Z	343.008° N	26.919°	2025-07-01 23:08:42.996Z	37.017° NE

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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.