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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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Iframe URL

https://www.satcat.com/sats-embedded/7529?theme=dark&initialShowStats=false

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Identifier

7529, 1974-089A

Orbit

SSO

Country

Related business

National Oceanic and Atmospheric Administration (US)

Manufacturer

RCA/East Windsor

Mission

Non-operational Civil Weather

Bus & Motor

TIROS M, Unknown motor

Mass

345 kg wet, 345 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

Hex Poly + 3 Pan, 0.6 m

Radar Cross Section

1.292 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 NOAA 4
1 07529U 74089A   25261.03244020 -.00000023  00000-0  14814-3 0  9999
2 07529 102.0087 265.9334 0009095 358.1984   7.4416 12.53196468325430

Epoch: 2025-09-18T00:46Z

TLE epoch observation values (Epoch: 2025-09-18T00:46:42.833Z)

Latitude

5.45549°

Longitude

-104.10327°

Altitude

1,446.118 km

Speed

7.142 km/s

True Right ascension

17h 39m 06s

True Declination

5° 25' 33"

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

09:05:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,455.83 km

Perigee altitude

1,441.593 km

Semi-major axis

7,826.848 km

Eccentricity

0.00091

Inclination

102.0087°

RAAN

265.9334°

Arg. of periapsis

358.1984°

True anomaly

7.45511°

Mean anomaly

7.4416°

Eccentric anomaly

7.44836°

Mean motion

3.13446 °/min

Orbital period

114.85 mins

BSTAR

0.00014814

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

THORAD DELTA 1 DEB, 8160

THORAD DELTA 1 DEB, 8161

THORAD DELTA 1 DEB, 8162

THORAD DELTA 1 DEB, 8163

THORAD DELTA 1 DEB, 8164

THORAD DELTA 1 DEB, 8165

THORAD DELTA 1 DEB, 8166

THORAD DELTA 1 DEB, 8167

THORAD DELTA 1 DEB, 8168

THORAD DELTA 1 DEB, 8169

THORAD DELTA 1 DEB, 8170

THORAD DELTA 1 DEB, 8171 (Decayed)

THORAD DELTA 1 DEB, 8172

THORAD DELTA 1 DEB, 8173

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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.
9 mins	2025-09-18 22:02:06.710Z	81.584° E	2025-09-18 22:06:06.710Z	51.113° ENE	16.223°	2025-09-18 22:11:06.710Z	13.045° NNE
14 mins	2025-09-18 23:51:06.710Z	149.535° SSE	2025-09-18 23:58:06.710Z	50.064° ENE	43.694°	2025-09-19 00:05:06.710Z	346.738° N
11 mins	2025-09-19 01:46:06.710Z	222.742° SW	2025-09-19 01:51:06.710Z	265.072° W	21.428°	2025-09-19 01:57:06.710Z	313.799° NW
10 mins	2025-09-19 11:55:06.710Z	54.421° ENE	2025-09-19 12:00:06.710Z	98.561° ESE	21.442°	2025-09-19 12:05:06.710Z	139.217° SSE
15 mins	2025-09-19 13:46:06.710Z	12.976° NNE	2025-09-19 13:53:06.710Z	288.915° WNW	43.857°	2025-09-19 14:01:06.710Z	209.088° SW
8 mins	2025-09-19 15:41:06.710Z	338.083° N	2025-09-19 15:44:06.710Z	314.26° NW	16.38°	2025-09-19 15:49:06.710Z	276.17° WNW

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: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-09-18T00:46:42.833Z)

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: 15 hours ago