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SECOR 1B, 729

Orbit data source: Space-Track

SECOR 1B, 729 is an American payload satellite in LEO that was launched on Sat, 11 Jan 1964 UTC via a THOR SLV-2A AGENA D launch vehicle from the Air Force Western Test Range (AFWTR). 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/729?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/729?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

729, 1964-001C

Orbit

LEO

Country

Related business

United States Army (US)

Manufacturer

ITT

Mission

Defense Geodetic

Bus & Motor

SECOR, Unknown motor

Mass

18 kg wet, 18 kg dry

Launch date (UTC)

1964-01-11 (62 years ago)

Launch vehicle

THOR SLV-2A AGENA D

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.2 m

Radar Cross Section

0.104 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 22 hours ago

TLE from 22 hours ago

0 SECOR 1B
1 00729U 64001C   25242.10901885  .00000047  00000-0  74098-4 0  9999
2 00729  69.9001 197.2176 0011120  90.0172 270.2206 13.95182469136100

Epoch: 2025-08-30T02:36Z

TLE epoch observation values (Epoch: 2025-08-30T02:36:59.228Z)

Latitude

-0.0001°

Longitude

179.42274°

Altitude

912.808 km

Speed

7.396 km/s

True Right ascension

13h 08m 52s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

16:00:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

916.682 km

Perigee altitude

900.477 km

Semi-major axis

7,286.716 km

Eccentricity

0.00111

Inclination

69.9001°

RAAN

197.2176°

Arg. of periapsis

90.0172°

True anomaly

270.09317°

Mean anomaly

270.2206°

Eccentric anomaly

270.15689°

Mean motion

3.48936 °/min

Orbital period

103.17 mins

BSTAR

0.000074098

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Other satellites on launch #1 in the year 1964 (1964-01-11 UTC)

THOR AGENA D R/B, 727

GGSE 1 (GGRS), 728

SOLRAD 7A, 730

GREB, 731

SECOR 1B Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
8 mins	2025-08-31 06:41:57.859Z	7.673° NNE	2025-08-31 06:45:57.859Z	57.152° ENE	21.1°	2025-08-31 06:49:57.859Z	101.022° ESE
10 mins	2025-08-31 08:26:57.859Z	325.51° NNW	2025-08-31 08:31:57.859Z	236.914° WSW	40.646°	2025-08-31 08:36:57.859Z	173.04° S
10 mins	2025-08-31 21:44:57.859Z	177.416° S	2025-08-31 21:49:57.859Z	96.39° ESE	36.625°	2025-08-31 21:54:57.859Z	36.59° NE
8 mins	2025-08-31 23:31:57.859Z	259.54° W	2025-08-31 23:35:57.859Z	313.873° NW	24.201°	2025-08-31 23:39:57.859Z	0.152° NNE