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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Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Spacecraft
Bus & Motor
SURCAL, Unknown motor
Mass
5 kg wet, 5 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
BOX, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 PORCUPINE 2
1 01577U 65065J 26308.80153147 .00000089 00000-0 15208-3 0 9996
2 01577 90.0433 212.6017 0071670 67.2860 0.2928 13.36277674981432Epoch: 2026-11-04T19:14Z
TLE epoch observation values (Epoch: 2026-11-04T19:14:12.319Z)
Latitude
67.65909°
Longitude
-120.09908°
Altitude
1,081.197 km
Speed
7.344 km/s
True Right ascension
14h 09m 59s
True Declination
67° 32' 35"
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
12:01:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,173.988 km
Perigee altitude
1,066.506 km
Semi-major axis
7,498.384 km
Eccentricity
0.00717
Inclination
90.0433°
RAAN
212.6017°
Arg. of periapsis
67.286°
True anomaly
0.29703°
Mean anomaly
0.2928°
Eccentric anomaly
0.29491°
Mean motion
3.34266 °/min
Orbital period
107.7 mins
BSTAR
0.00015208
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Other satellites on launch #65 in the year 1965 (1965-08-13 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.PORCUPINE 2 Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-11-05 16:37:20.543Z | 107.181° ESE | 2026-11-05 16:41:20.543Z | 66.23° ENE | 18.646° | 2026-11-05 16:44:20.543Z | 36.649° NE |
| 11 mins | 2026-11-05 18:22:20.543Z | 188.509° SSW | 2026-11-05 18:27:20.543Z | 249.249° W | 67.084° | 2026-11-05 18:33:20.543Z | 351.104° N |
| 11 mins | 2026-11-06 05:39:20.543Z | 13.658° NNE | 2026-11-06 05:44:20.543Z | 86.229° E | 60.257° | 2026-11-06 05:50:20.543Z | 167.201° S |
| 8 mins | 2026-11-06 07:28:20.543Z | 320.378° NNW | 2026-11-06 07:31:20.543Z | 287.395° WNW | 22.368° | 2026-11-06 07:36:20.543Z | 239.5° WSW |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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