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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
7529 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
USRelated business
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)
Launch vehicle
Launch site
Object type
Shape & HBR
Hex Poly + 3 Pan, 0.6 m
Radar Cross Section
1.292 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 NOAA 4
1 07529U 74089A 25242.92306862 -.00000036 00000-0 66673-4 0 9994
2 07529 102.0073 247.6274 0009294 32.2589 27.3319 12.53196045323169Epoch: 2025-08-30T22:09Z
TLE epoch observation values (Epoch: 2025-08-30T22:09:13.128Z)
Latitude
57.6571°
Longitude
-83.55361°
Altitude
1,454.183 km
Speed
7.143 km/s
True Right ascension
15h 12m 24s
True Declination
57° 30' 55"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
22:53:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,455.987 km
Perigee altitude
1,441.439 km
Semi-major axis
7,826.85 km
Eccentricity
0.00093
Inclination
102.0073°
RAAN
247.6274°
Arg. of periapsis
32.2589°
True anomaly
27.38085°
Mean anomaly
27.3319°
Eccentric anomaly
27.35637°
Mean motion
3.13446 °/min
Orbital period
114.85 mins
BSTAR
0.000066673
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #89 in the year 1974 (1974-11-15 UTC)
NOAA 4 Visibility forecast
Observer location: undefined°, undefined°
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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-08-31 11:54:58.793Z | 48.577° ENE | 2025-08-31 11:59:58.793Z | 89.95° E | 22.183° | 2025-08-31 12:05:58.793Z | 141.12° SSE |
| 15 mins | 2025-08-31 13:46:58.793Z | 12.066° NNE | 2025-08-31 13:53:58.793Z | 281.32° WNW | 43.427° | 2025-08-31 14:01:58.793Z | 210.332° SW |
| 7 mins | 2025-08-31 15:41:58.793Z | 336.771° NNW | 2025-08-31 15:44:58.793Z | 312.956° NW | 15.814° | 2025-08-31 15:48:58.793Z | 281.997° WNW |
| 12 mins | 2025-08-31 22:53:58.793Z | 113.305° SE | 2025-08-31 22:59:58.793Z | 53.167° ENE | 29.852° | 2025-08-31 23:05:58.793Z | 0.881° NNE |
| 15 mins | 2025-09-01 00:44:58.793Z | 183.461° SSW | 2025-09-01 00:51:58.793Z | 257.112° W | 38.999° | 2025-09-01 00:59:58.793Z | 333.395° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
|---|
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
|---|
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|