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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 src="https://www.satcat.com/sats-embedded/7529?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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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 (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

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 NOAA 4
1 07529U 74089A   26073.25562589 -.00000015  00000-0  19819-3 0  9999
2 07529 102.0070  85.0358 0009059  20.2411 353.2243 12.53201779347639

Epoch: 2026-03-14T06:08Z

TLE epoch observation values (Epoch: 2026-03-14T06:08:06.076Z)

Latitude

13.12259°

Longitude

178.30307°

Altitude

1,445.916 km

Speed

7.143 km/s

True Right ascension

05h 28m 49s

True Declination

13° 03' 12"

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

21:48:32

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,455.779 km

Perigee altitude

1,441.599 km

Semi-major axis

7,826.826 km

Eccentricity

0.00091

Inclination

102.007°

RAAN

85.0358°

Arg. of periapsis

20.2411°

True anomaly

353.21204°

Mean anomaly

353.2243°

Eccentric anomaly

353.21817°

Mean motion

3.13447 °/min

Orbital period

114.85 mins

BSTAR

0.00019819

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

THORAD DELTA 1 DEB, 8298 (Decayed)

THORAD DELTA 1 DEB, 13130 (Decayed)

THORAD DELTA 1 DEB, 8404

THORAD DELTA 1 DEB, 9986

THORAD DELTA 1 DEB, 9696

THORAD DELTA 1 DEB, 8407

THORAD DELTA 1 DEB, 42606

THORAD DELTA 1 DEB, 8438

THORAD DELTA 1 DEB, 9987

THORAD DELTA 1 DEB, 8183

THORAD DELTA 1 DEB, 8182

THORAD DELTA 1 DEB, 42592

THORAD DELTA 1 DEB, 14475

THORAD DELTA 1 DEB, 9988

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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.
14 mins	2026-03-14 23:25:39.704Z	127.035° SE	2026-03-14 23:32:39.704Z	65.927° ENE	33.823°	2026-03-14 23:39:39.704Z	357.448° N
13 mins	2026-03-15 01:19:39.704Z	195.513° SSW	2026-03-15 01:25:39.704Z	260.759° W	34.885°	2026-03-15 01:32:39.704Z	327.548° NNW
15 mins	2026-03-15 13:20:39.704Z	25.063° NE	2026-03-15 13:27:39.704Z	96.143° ESE	42.097°	2026-03-15 13:35:39.704Z	185.44° SSW
12 mins	2026-03-15 15:14:39.704Z	352.69° N	2026-03-15 15:19:39.704Z	308.302° NW	26.476°	2026-03-15 15:26:39.704Z	248.392° 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 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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-03-14T06:08:06.076Z)

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: 11 hours ago