PORCUPINE 2, 1577
Orbit data source: Space-Track
PORCUPINE 2, 1577 is a payload satellite owned by NRL (US) in LEO that was launched on Fri, 13 Aug 1965 UTC via a THOR ABLESTAR 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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1577 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Defense Calibration
Bus & Motor
SURCAL, Unknown motor
Mass
5 kg wet, 5 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 0.1 m
Radar Cross Section
0.060 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 PORCUPINE 2
1 01577U 65065J 25242.86165299 .00000153 00000-0 27744-3 0 9999
2 01577 90.0119 211.3979 0069102 201.4143 223.5421 13.36186777923885Epoch: 2025-08-30T20:40Z
TLE epoch observation values (Epoch: 2025-08-30T20:40:46.818Z)
Latitude
64.49593°
Longitude
-78.11186°
Altitude
1,172.472 km
Speed
7.255 km/s
True Right ascension
14h 05m 29s
True Declination
64° 22' 10"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:57:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,172.405 km
Perigee altitude
1,068.77 km
Semi-major axis
7,498.724 km
Eccentricity
0.00691
Inclination
90.0119°
RAAN
211.3979°
Arg. of periapsis
201.4143°
True anomaly
223.00001°
Mean anomaly
223.5421°
Eccentric anomaly
223.27071°
Mean motion
3.34243 °/min
Orbital period
107.71 mins
BSTAR
0.00027744
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Other satellites on launch #65 in the year 1965 (1965-08-13 UTC)
PORCUPINE 2 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-08-31 09:32:45.388Z | 20.335° NNE | 2025-08-31 09:38:45.388Z | 95.2° ESE | 32.256° | 2025-08-31 09:43:45.388Z | 150.275° SSE |
| 10 mins | 2025-08-31 11:20:45.388Z | 338.807° N | 2025-08-31 11:25:45.388Z | 281.473° WNW | 28.596° | 2025-08-31 11:30:45.388Z | 225.84° WSW |
| 12 mins | 2025-08-31 21:37:45.388Z | 146.642° SSE | 2025-08-31 21:43:45.388Z | 69.306° E | 35.696° | 2025-08-31 21:49:45.388Z | 10.533° NNE |
| 10 mins | 2025-08-31 23:26:45.388Z | 228.51° WSW | 2025-08-31 23:30:45.388Z | 273.831° WNW | 27.028° | 2025-08-31 23:36:45.388Z | 335.649° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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Authenticating...
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