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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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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: 17 hours ago

TLE from 17 hours ago

0 NOAA 4
1 07529U 74089A   25347.97802219 -.00000017  00000-0  18456-3 0  9996
2 07529 102.0070 353.8054 0009022 189.3237 226.7469 12.53199306336321

Epoch: 2025-12-13T23:28Z

TLE epoch observation values (Epoch: 2025-12-13T23:28:21.117Z)

Latitude

54.27448°

Longitude

-98.29279°

Altitude

1,464.707 km

Speed

7.133 km/s

True Right ascension

22h 26m 46s

True Declination

54° 07' 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

15:31:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,455.761 km

Perigee altitude

1,441.638 km

Semi-major axis

7,826.836 km

Eccentricity

0.0009

Inclination

102.007°

RAAN

353.8054°

Arg. of periapsis

189.3237°

True anomaly

226.67166°

Mean anomaly

226.7469°

Eccentric anomaly

226.70927°

Mean motion

3.13447 °/min

Orbital period

114.85 mins

BSTAR

0.00018456

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

THORAD DELTA 1 DEB, 15522 (Decayed)

THORAD DELTA 1 DEB, 8596

THORAD DELTA 1 DEB, 8788

THORAD DELTA 1 DEB, 9699

THORAD DELTA 1 DEB, 9989

THORAD DELTA 1 DEB, 42620

THORAD DELTA 1 DEB, 42602

THORAD DELTA 1 DEB, 8146

THORAD DELTA 1 DEB, 42599

THORAD DELTA 1 DEB, 42616

THORAD DELTA 1 DEB, 42617

THORAD DELTA 1 DEB, 8168

THORAD DELTA 1 DEB, 8560

THORAD DELTA 1 DEB, 18693

THORAD DELTA 1 R/B, 7532

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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	2025-12-14 22:21:58.178Z	87.16° E	2025-12-14 22:26:58.178Z	46.256° ENE	18.791°	2025-12-14 22:30:58.178Z	14.498° NNE
15 mins	2025-12-15 00:10:58.178Z	156.843° SSE	2025-12-15 00:17:58.178Z	88.596° E	44.87°	2025-12-15 00:25:58.178Z	343.655° N
9 mins	2025-12-15 02:07:58.178Z	236.862° WSW	2025-12-15 02:11:58.178Z	270.414° WNW	18.144°	2025-12-15 02:16:58.178Z	308.816° NW
11 mins	2025-12-15 12:14:58.178Z	48.68° ENE	2025-12-15 12:19:58.178Z	94.086° ESE	24.924°	2025-12-15 12:25:58.178Z	147.008° SSE
14 mins	2025-12-15 14:06:58.178Z	8.798° NNE	2025-12-15 14:12:58.178Z	305.939° NW	41.722°	2025-12-15 14:20:58.178Z	215.732° SW
6 mins	2025-12-15 16:01:58.178Z	333.197° NNW	2025-12-15 16:03:58.178Z	317.866° NNW	13.917°	2025-12-15 16:07:58.178Z	287.613° 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: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2025-12-13T23:28:21.117Z)

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: 17 hours ago