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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

1 day 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 1 day ago

0 PORCUPINE 2
1 01577U 65065J   25195.78360072  .00000061  00000-0  10095-3 0  9992
2 01577  90.0065 211.3481 0069226 337.4061 202.9495 13.36177857917591

Epoch: 2025-07-14T18:48Z

TLE epoch observation values (Epoch: 2025-07-14T18:48:23.102Z)

Latitude

-0.16361°

Longitude

176.36431°

Altitude

1,174.39 km

Speed

7.243 km/s

True Right ascension

02h 05m 23s

True Declination

0° 09' 46"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-83.47344°

Longitude

-3.57846°

Altitude

1,124.209 km

Speed

7.304 km/s

Apparent Right ascension

20h 22m 15s

Apparent Declination

-67° 30' 44"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

09:02:21

Azimuth

171.884° S

Elevation

-61.855°

Doppler factor

Orbital elements

Apogee altitude

1,172.532 km

Perigee altitude

1,068.71 km

Semi-major axis

7,498.758 km

Eccentricity

0.00692

Inclination

90.0065°

RAAN

211.3481°

Arg. of periapsis

337.4061°

True anomaly

Unknown

Mean anomaly

202.9495°

Eccentric anomaly

Unknown

Mean motion

3.34241 °/min

Orbital period

107.71 mins

BSTAR

0.00010095

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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.
11 mins	2025-07-16 00:34:04.476Z	142.017° SSE	2025-07-16 00:40:04.476Z	69.714° E	31.938°	2025-07-16 00:45:04.476Z	16.094° NNE
10 mins	2025-07-16 02:23:04.476Z	223.749° SW	2025-07-16 02:27:04.476Z	274.191° WNW	29.04°	2025-07-16 02:33:04.476Z	338.713° N
8 mins	2025-07-16 11:52:04.476Z	40.125° NE	2025-07-16 11:56:04.476Z	78.639° E	19.037°	2025-07-16 12:00:04.476Z	116.872° SE
12 mins	2025-07-16 13:39:04.476Z	354.599° N	2025-07-16 13:44:04.476Z	282.771° WNW	43.16°	2025-07-16 13:51:04.476Z	194.671° SSW

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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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