Showing default

GGSE 1 (GGRS), 728

Orbit data source: Space-Track

GGSE 1 (GGRS), 728 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/728?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/728?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

728, 1964-001B

Orbit

LEO

Last TLE update

2 hours ago

Origin

National Reconnaissance Office (US)

Manufacturer

NRL

Mission

Defense Technology

Bus & Motor

NRL 20", Unknown motor

Mass

38 kg wet, 38 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

Sphere + 1 Ant, 4.5 m

Radar Cross Section

0.623 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 2 hours ago

0 GGSE 1 (GGRS)
1   728U 64001B   25199.19442689  .00000020  00000-0  52109-4 0  9990
2   728  69.9053 202.8217 0011339  48.9732 311.2352 13.97682095133478

Epoch: 2025-07-18T04:39Z

TLE epoch observation values (Epoch: 2025-07-18T04:39:58.483Z)

Latitude

-0.00003°

Longitude

-163.42137°

Altitude

898.704 km

Speed

7.406 km/s

True Right ascension

13h 31m 17s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

38.40273°

Longitude

-0.40112°

Altitude

906.535 km

Speed

7.403 km/s

Apparent Right ascension

03h 39m 53s

Apparent Declination

4° 05' 42"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

19:47:32

Azimuth

67.969° E

Elevation

-18.321°

Doppler factor

Orbital elements

Apogee altitude

908.136 km

Perigee altitude

891.631 km

Semi-major axis

7,278.021 km

Eccentricity

0.00113

Inclination

69.9053°

RAAN

202.8217°

Arg. of periapsis

48.9732°

True anomaly

311.1374°

Mean anomaly

311.2352°

Eccentric anomaly

311.18631°

Mean motion

3.49561 °/min

Orbital period

102.99 mins

BSTAR

0.000052109

Loading maneuver chart data...

Loading SW <> Apogee altitude chart data...

Loading historical data...

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

THOR AGENA D R/B, 727

SECOR 1B, 729

SOLRAD 7A, 730

GREB, 731

GGSE 1 (GGRS) 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.
9 mins	2025-07-18 10:21:38.016Z	356.477° N	2025-07-18 10:26:38.016Z	58.401° ENE	26.3°	2025-07-18 10:30:38.016Z	109.079° ESE
9 mins	2025-07-18 12:07:38.016Z	317.508° NNW	2025-07-18 12:11:38.016Z	264.391° W	34.056°	2025-07-18 12:16:38.016Z	187.174° SSW
9 mins	2025-07-19 01:24:38.016Z	186.832° SSW	2025-07-19 01:28:38.016Z	103.73° ESE	42.197°	2025-07-19 01:33:38.016Z	31.666° NE
7 mins	2025-07-19 03:11:38.016Z	273.697° WNW	2025-07-19 03:14:38.016Z	311.163° NW	19.738°	2025-07-19 03:18:38.016Z	355.915° N

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in ascending order

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in ascending order

Check out GGSE 1 (GGRS), 728 on other resources

View GGSE 1 (GGRS), 728 on NASA - NSSDCA Website

View GGSE 1 (GGRS), 728 on Heavens-Above

View GGSE 1 (GGRS), 728 on Keep Track

View GGSE 1 (GGRS), 728 on Celestrak

View GGSE 1 (GGRS), 728 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.