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OSCAR 7, 7530

Orbit data source: Space-Track

OSCAR 7, 7530 is a payload satellite owned by AMSAT-NA (US) in SSO that was launched on Fri, 15 Nov 1974 UTC via a DELTA 2310 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 URL

https://www.satcat.com/sats-embedded/7530?theme=dark&initialShowStats=false

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Identifier

7530, 1974-089B

Orbit

SSO

Country

Related business

AMSAT North America (Radio Amateur Satellite Corp) (US)

Manufacturer

AMSAT-NA

Mission

Partially operational spacecraft

Bus & Motor

AMSAT PHASE 2, Unknown motor

Mass

29 kg wet, 29 kg dry

Launch date (UTC)

1974-11-15 (51 years ago)

Launch vehicle

DELTA 2310

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 OSCAR 7
1  7530U 74089B   26050.46553740 -.00000050  00000-0 -24830-4 0  9998
2  7530 101.9973  62.4593 0012154 357.2840 173.9840 12.53695970345762

Epoch: 2026-02-19T11:10Z

TLE epoch observation values (Epoch: 2026-02-19T11:10:22.431Z)

Latitude

8.46883°

Longitude

-72.74629°

Altitude

1,460.408 km

Speed

7.129 km/s

True Right ascension

16h 17m 03s

True Declination

8° 25' 24"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

20:03:56

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,456.141 km

Perigee altitude

1,437.12 km

Semi-major axis

7,824.767 km

Eccentricity

0.00122

Inclination

101.9973°

RAAN

62.4593°

Arg. of periapsis

357.284°

True anomaly

173.99857°

Mean anomaly

173.984°

Eccentric anomaly

173.99129°

Mean motion

3.13571 °/min

Orbital period

114.81 mins

BSTAR

-0.00002483

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Other satellites on launch #89 in the year 1974 (1974-11-15 UTC)

THORAD DELTA 1 DEB, 8556

THORAD DELTA 1 DEB, 8561

THORAD DELTA 1 DEB, 8562

THORAD DELTA 1 DEB, 8564

THORAD DELTA 1 DEB, 42603

THORAD DELTA 1 DEB, 42623

THORAD DELTA 1 DEB, 8157

THORAD DELTA 1 DEB, 8152

THORAD DELTA 1 DEB, 42605

THORAD DELTA 1 DEB, 42621

THORAD DELTA 1 DEB, 42622

THORAD DELTA 1 DEB, 13527

THORAD DELTA 1 DEB, 8185

THORAD DELTA 1 DEB, 18539

THORAD DELTA 1 DEB, 14881

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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.

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OSCAR 7 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.
5 mins	2026-02-19 22:00:46.455Z	61.199° ENE	2026-02-19 22:02:46.455Z	46.443° ENE	12.115°	2026-02-19 22:05:46.455Z	24.361° NE
14 mins	2026-02-19 23:47:46.455Z	135.735° SSE	2026-02-19 23:53:46.455Z	70.625° E	39.602°	2026-02-20 00:01:46.455Z	350.766° N
12 mins	2026-02-20 01:41:46.455Z	211.552° SW	2026-02-20 01:46:46.455Z	260.003° W	27.96°	2026-02-20 01:53:46.455Z	321.745° NNW
8 mins	2026-02-20 11:51:46.455Z	64.366° ENE	2026-02-20 11:54:46.455Z	87.716° E	15.353°	2026-02-20 11:59:46.455Z	125.462° SE
15 mins	2026-02-20 13:41:46.455Z	19.114° NNE	2026-02-20 13:48:46.455Z	89.307° E	44.891°	2026-02-20 13:56:46.455Z	197.46° SSW
10 mins	2026-02-20 15:35:46.455Z	347.766° N	2026-02-20 15:40:46.455Z	305.585° NW	21.172°	2026-02-20 15:45:46.455Z	264.869° W

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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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out OSCAR 7, 7530 on other resources

View OSCAR 7, 7530 on NASA - NSSDCA Website

View OSCAR 7, 7530 on Heavens-Above

View OSCAR 7, 7530 on Keep Track

View OSCAR 7, 7530 on Celestrak

View OSCAR 7, 7530 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

OSCAR 7, 7530

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-02-19T11:10:22.431Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #89 in the year 1974 (1974-11-15 UTC)

OSCAR 7 Visibility forecast

Co-orbital & Co-planar RSOs

Check out OSCAR 7, 7530 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 hours ago