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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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<iframe src="https://www.satcat.com/sats-embedded/1577?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/1577?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

1577, 1965-065J

Orbit

LEO

Last TLE update

11 hours ago

Origin

United States Navy (US)

Manufacturer

NRL

Mission

Defense Calibration

Bus & Motor

SURCAL, Unknown motor

Mass

5 kg wet, 5 kg dry

Launch date (UTC)

1965-08-13 (60 years ago)

Launch vehicle

THOR ABLESTAR

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.2 m

Radar Cross Section

0.060 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 11 hours ago

0 PORCUPINE 2
1 01577U 65065J   25128.74884657  .00000116  00000-0  20575-3 0  9999
2 01577  90.0098 211.2810 0071083 163.3555 313.9380 13.36168558908640

Epoch: 2025-05-08T17:58Z

Definitive object data (Epoch: 2025-05-08T17:58:20.343Z)

Latitude

63.38142°

Longitude

-105.09919°

Altitude

1,097.758 km

Speed

7.327 km/s

True Right ascension

02h 05m 12s

True Declination

63° 14' 59"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-71.85862°

Longitude

-105.14794°

Altitude

1,149.635 km

Speed

7.278 km/s

Apparent Right ascension

01h 44m 04s

Apparent Declination

-57° 08' 47"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

13:34:02

Azimuth

184.578° SSW

Elevation

-72.693°

Doppler factor

Orbital elements

Apogee altitude

1,173.959 km

Perigee altitude

1,067.352 km

Semi-major axis

7,498.793 km

Eccentricity

0.0071083

Inclination

90.0098°

RAAN

211.281°

Arg. of periapsis

163.3555°

True anomaly

313.34782°

Mean anomaly

313.938°

Eccentric anomaly

313.64327°

Mean motion

3.34238 °/min

BSTAR

0.00020575

Orbital period

107.71 mins

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Other satellites on launch #65 in the year 1965 (1965-08-13 UTC)

THOR ABLESTAR DEB, 1504

THOR ABLESTAR R/B, 1508

DODECAPOLE 2, 1510

THOR ABLESTAR DEB, 1511

TEMPSAT 1, 1512

OPS 8464 (TRANSIT 5B-7), 1514

NAVSPASUR ROD 1, 1515

CALSPHERE 4(A), 1520

THOR ABLESTAR DEB, 1521

THOR ABLESTAR DEB, 1522

OPS 8464 DEB *, 2335 (Decayed)

TRANSIT 5B-7 DEB, 3809 (Decayed)

THOR ABLESTAR DEB, 3810

THOR ABLESTAR DEB, 5265

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.
13 mins	2025-05-09 06:03:21.990Z	184.353° SSW	2025-05-09 06:10:21.990Z	282.179° WNW	43.649°	2025-05-09 06:16:21.990Z	352.955° N
11 mins	2025-05-09 17:22:21.990Z	15.72° NNE	2025-05-09 17:27:21.990Z	97.828° ESE	39.807°	2025-05-09 17:33:21.990Z	166.381° S
8 mins	2025-05-09 19:10:21.990Z	327.024° NNW	2025-05-09 19:14:21.990Z	283.652° WNW	20.974°	2025-05-09 19:18:21.990Z	242.565° WSW

Authenticating...

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Check out PORCUPINE 2, 1577 on other resources

View PORCUPINE 2, 1577 on NASA - NSSDCA Website

View PORCUPINE 2, 1577 on Heavens-Above

View PORCUPINE 2, 1577 on Keep Track

View PORCUPINE 2, 1577 on Celestrak

View PORCUPINE 2, 1577 on Gunter's Space Page

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