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NOAA 4, 7529

Orbit data source: Space-Track

NOAA 4, 7529 is a payload satellite owned by NOAA (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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https://www.satcat.com/sats-embedded/7529?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

7529, 1974-089A

Orbit

SSO

Country

Related business

National Oceanic and Atmospheric Administration (US)

Manufacturer

RCA/East Windsor

Mission

Non-operational spacecraft

Bus & Motor

TIROS M, Unknown motor

Mass

345 kg wet, 345 kg dry

Launch date (UTC)

1974-11-15 (52 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

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 NOAA 4
1 07529U 74089A   26162.99333866 -.00000026  00000-0  13047-3 0  9992
2 07529 102.0008 175.7238 0008892 204.1176 212.7332 12.53203740358875

Epoch: 2026-06-11T23:50Z

TLE epoch observation values (Epoch: 2026-06-11T23:50:24.460Z)

Latitude

55.02332°

Longitude

-99.80636°

Altitude

1,465.876 km

Speed

7.132 km/s

True Right ascension

10h 32m 29s

True Declination

54° 52' 34"

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

05:14:18

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,455.64 km

Perigee altitude

1,441.721 km

Semi-major axis

7,826.818 km

Eccentricity

0.00089

Inclination

102.0008°

RAAN

175.7238°

Arg. of periapsis

204.1176°

True anomaly

212.67815°

Mean anomaly

212.7332°

Eccentric anomaly

212.70567°

Mean motion

3.13448 °/min

Orbital period

114.85 mins

BSTAR

0.00013047

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

THORAD DELTA 1 DEB, 8177

THORAD DELTA 1 DEB, 20680 (Decayed)

THORAD DELTA 1 DEB, 20681 (Decayed)

THORAD DELTA 1 DEB, 42609

THORAD DELTA 1 DEB, 8297 (Decayed)

THORAD DELTA 1 DEB, 8136

THORAD DELTA 1 DEB, 8139

THORAD DELTA 1 DEB, 8140

THORAD DELTA 1 DEB, 8141

THORAD DELTA 1 DEB, 8160

THORAD DELTA 1 DEB, 8166

THORAD DELTA 1 DEB, 8172

THORAD DELTA 1 DEB, 8173

THORAD DELTA 1 DEB, 8181

THORAD DELTA 1 DEB, 8184

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NOAA 4 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.
10 mins	2026-06-12 22:43:20.134Z	90.347° ESE	2026-06-12 22:48:20.134Z	49.52° ENE	19.723°	2026-06-12 22:53:20.134Z	10.22° NNE
14 mins	2026-06-13 00:33:20.134Z	159.105° S	2026-06-13 00:39:20.134Z	149.894° SSE	44.732°	2026-06-13 00:47:20.134Z	342.736° N
9 mins	2026-06-13 02:29:20.134Z	235.467° WSW	2026-06-13 02:33:20.134Z	267.266° W	17.114°	2026-06-13 02:38:20.134Z	305.976° NW
12 mins	2026-06-13 12:36:20.134Z	45.572° ENE	2026-06-13 12:42:20.134Z	101.675° ESE	26.056°	2026-06-13 12:48:20.134Z	151.817° SSE
14 mins	2026-06-13 14:28:20.134Z	8.445° NNE	2026-06-13 14:35:20.134Z	284.716° WNW	40.958°	2026-06-13 14:42:20.134Z	218.378° SW
5 mins	2026-06-13 16:24:20.134Z	328.256° NNW	2026-06-13 16:26:20.134Z	312.814° NW	13.269°	2026-06-13 16:29:20.134Z	290.635° WNW

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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 NOAA 4, 7529 on other resources

View NOAA 4, 7529 on NASA - NSSDCA Website

View NOAA 4, 7529 on Heavens-Above

View NOAA 4, 7529 on Keep Track

View NOAA 4, 7529 on Celestrak

View NOAA 4, 7529 on Gunter's Space Page

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

NOAA 4, 7529

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-06-11T23:50:24.460Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

NOAA 4 Visibility forecast

Co-orbital & Co-planar RSOs

Check out NOAA 4, 7529 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago