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SENTINEL 3B, 43437

Orbit data source: Space-Track

SENTINEL 3B, 43437 is an ESA payload satellite in SSO that was launched on Wed, 25 Apr 2018 UTC via an ROKOT launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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/43437?theme=dark&initialShowStats=false

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Identifier

43437, 2018-039A

Orbit

SSO

Country

ESA

Related business

Directorate-General for Internal Market, Industry, Entrepreneurship and SMEs (BE)

Manufacturer

Thales Alenia

Mission

Operational Civil Imaging

Bus & Motor

SENTINEL-3A, Unknown motor

Mass

1,250 kg wet, 1,150 kg dry

Launch date (UTC)

2018-04-25 (8 years ago)

Launch vehicle

ROKOT

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 2.0 m

Radar Cross Section

12.454 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 SENTINEL 3B
1 43437U 18039A   26171.41568603  .00000074  00000-0  48499-4 0  9991
2 43437  98.6248 238.9017 0000727  94.6800 265.4463 14.26735540424583

Epoch: 2026-06-20T09:58Z

TLE epoch observation values (Epoch: 2026-06-20T09:58:35.272Z)

Latitude

-0.0001°

Longitude

-179.37588°

Altitude

805.631 km

Speed

7.451 km/s

True Right ascension

15h 55m 36s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

21:51:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

800.331 km

Perigee altitude

799.287 km

Semi-major axis

7,177.946 km

Eccentricity

0.00007

Inclination

98.6248°

RAAN

238.9017°

Arg. of periapsis

94.68°

True anomaly

265.438°

Mean anomaly

265.4463°

Eccentric anomaly

265.44215°

Mean motion

3.56897 °/min

Orbital period

100.87 mins

BSTAR

0.000048499

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Other satellites on launch #39 in the year 2018 (2018-04-25 UTC)

BREEZE-KM R/B, 43438

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SENTINEL 3B 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.
7 mins	2026-06-22 16:26:17.798Z	46.089° ENE	2026-06-22 16:30:17.798Z	103.175° ESE	22.245°	2026-06-22 16:33:17.798Z	142.897° SSE
8 mins	2026-06-22 18:06:17.798Z	349.558° N	2026-06-22 18:09:17.798Z	300.284° NW	32.181°	2026-06-22 18:14:17.798Z	223.814° SW
7 mins	2026-06-23 03:46:17.798Z	120.474° SE	2026-06-23 03:49:17.798Z	63.987° ENE	30.439°	2026-06-23 03:53:17.798Z	6.738° NNE
6 mins	2026-06-23 05:26:17.798Z	223.189° SW	2026-06-23 05:29:17.798Z	272.834° WNW	24.057°	2026-06-23 05:32:17.798Z	314.533° NW

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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 SENTINEL 3B, 43437 on other resources

View SENTINEL 3B, 43437 on NASA - NSSDCA Website

View SENTINEL 3B, 43437 on Heavens-Above

View SENTINEL 3B, 43437 on Keep Track

View SENTINEL 3B, 43437 on Celestrak

View SENTINEL 3B, 43437 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

SENTINEL 3B, 43437

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T09:58:35.272Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 2018 (2018-04-25 UTC)

SENTINEL 3B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SENTINEL 3B, 43437 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago