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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

BOX + 2 PAN, 1.1 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 NOAA 4
1 07529U 74089A   26305.31846094 -.00000040  00000-0  39814-4 0  9996
2 07529 101.9998 319.5221 0008861 296.4509  74.6384 12.53207237376700

Epoch: 2026-11-01T07:38Z

TLE epoch observation values (Epoch: 2026-11-01T07:38:35.025Z)

Latitude

10.89657°

Longitude

161.93106°

Altitude

1,451.096 km

Speed

7.138 km/s

True Right ascension

21h 08m 45s

True Declination

10° 50' 19"

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

15:44:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,455.601 km

Perigee altitude

1,441.731 km

Semi-major axis

7,826.803 km

Eccentricity

0.00089

Inclination

101.9998°

RAAN

319.5221°

Arg. of periapsis

296.4509°

True anomaly

74.73634°

Mean anomaly

74.6384°

Eccentric anomaly

74.68737°

Mean motion

3.13449 °/min

Orbital period

114.85 mins

BSTAR

0.000039814

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

THORAD DELTA 1 DEB, 8302 (Decayed)

THORAD DELTA 1 DEB, 13130 (Decayed)

THORAD DELTA 1 DEB, 8401

THORAD DELTA 1 DEB, 8909 (Decayed)

THORAD DELTA 1 DEB, 42604

THORAD DELTA 1 DEB, 9698 (Decayed)

THORAD DELTA 1 DEB, 8397 (Decayed)

THORAD DELTA 1 DEB, 19154 (Decayed)

THORAD DELTA 1 DEB, 13528

THORAD DELTA 1 DEB, 13527

THORAD DELTA 1 DEB, 14881

THORAD DELTA 1 DEB, 8565 (Decayed)

THORAD DELTA 1 DEB, 8558 (Decayed)

THORAD DELTA 1 DEB, 8155 (Decayed)

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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.
12 mins	2026-11-01 23:04:37.997Z	100.831° ESE	2026-11-01 23:10:37.997Z	53.837° ENE	23.54°	2026-11-01 23:16:37.997Z	6.166° NNE
15 mins	2026-11-02 00:55:37.997Z	164.426° S	2026-11-02 01:02:37.997Z	267.274° W	82.687°	2026-11-02 01:10:37.997Z	340.872° N
7 mins	2026-11-02 02:53:37.997Z	248.374° W	2026-11-02 02:56:37.997Z	272.037° WNW	15.206°	2026-11-02 03:00:37.997Z	301.727° NW
13 mins	2026-11-02 12:58:37.997Z	40.631° NE	2026-11-02 13:04:37.997Z	95.427° ESE	33.819°	2026-11-02 13:11:37.997Z	157.916° S
14 mins	2026-11-02 14:51:37.997Z	4.647° NNE	2026-11-02 14:57:37.997Z	299.218° NW	54.079°	2026-11-02 15:05:37.997Z	222.087° SW

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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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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: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-11-01T07:38:35.025Z)

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: 12 hours ago