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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 PORCUPINE 2
1 01577U 65065J 26173.58706125 .00000031 00000-0 40648-4 0 9995
2 01577 90.0294 212.1152 0072148 88.6979 63.3874 13.36256322963371Epoch: 2026-06-22T14:05Z
TLE epoch observation values (Epoch: 2026-06-22T14:05:22.091Z)
Latitude
27.20835°
Longitude
-89.98265°
Altitude
1,102.688 km
Speed
7.315 km/s
True Right ascension
02h 08m 31s
True Declination
27° 04' 31"
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
13:04:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,174.427 km
Perigee altitude
1,066.227 km
Semi-major axis
7,498.464 km
Eccentricity
0.00721
Inclination
90.0294°
RAAN
212.1152°
Arg. of periapsis
88.6979°
True anomaly
64.12954°
Mean anomaly
63.3874°
Eccentric anomaly
63.75817°
Mean motion
3.3426 °/min
Orbital period
107.7 mins
BSTAR
0.000040648
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-06-24 03:10:28.959Z | 187.473° SSW | 2026-06-24 03:16:28.959Z | 281.523° WNW | 42.915° | 2026-06-24 03:22:28.959Z | 352.224° N |
| 12 mins | 2026-06-24 14:27:28.959Z | 12.535° NNE | 2026-06-24 14:32:28.959Z | 71.94° E | 40.403° | 2026-06-24 14:39:28.959Z | 168.445° S |
| 8 mins | 2026-06-24 16:16:28.959Z | 323.764° NNW | 2026-06-24 16:19:28.959Z | 292.086° WNW | 20.45° | 2026-06-24 16:24:28.959Z | 241.51° 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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