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GALILEO 21 (2C7), 43057

Orbit data source: Space-Track

GALILEO 21 (2C7), 43057 is a payload satellite owned by GNSS Agency (ESA) that was launched on Tue, 12 Dec 2017 UTC via an ARIANE 5ES launch vehicle from the French Guiana (FRGUI). 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/43057?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

43057, 2017-079C

Orbit

Active

Last TLE update

5 days ago

Origin

European Space Agency (ESA)

Manufacturer

OHB

Mission

Operational Civil Navigation

Bus & Motor

GALILEOSAT, AOCS

Mass

715 kg wet, 700 kg dry

Launch date (UTC)

2017-12-12 (8 years ago)

Launch vehicle

ARIANE 5ES

Launch site

French Guiana (FRGUI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 14.71 m

Radar Cross Section

9.223 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 5 days ago

0 GALILEO 21 (2C7)
1 43057U 17079C   25180.99159110  .00000022  00000-0  00000+0 0  9997
2 43057  55.1857 231.1953 0006287 276.7027  83.3045  1.70474264 46985

Epoch: 2025-06-29T23:47Z

TLE epoch observation values (Epoch: 2025-06-29T23:47:53.471Z)

Latitude

-0.00009°

Longitude

-44.0695°

Altitude

23,220.258 km

Speed

3.67 km/s

True Right ascension

15h 24m 50s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

51.18445°

Longitude

15.4886°

Altitude

23,245.926 km

Speed

3.668 km/s

Apparent Right ascension

18h 47m 15s

Apparent Declination

52° 49' 51"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

21:11:59

Azimuth

309.903° NW

Elevation

62.291°

Doppler factor

Orbital elements

Apogee altitude

23,240.764 km

Perigee altitude

23,203.544 km

Semi-major axis

29,600.291 km

Eccentricity

0.00063

Inclination

55.1857°

RAAN

231.1953°

Arg. of periapsis

276.7027°

True anomaly

Unknown

Mean anomaly

83.3045°

Eccentric anomaly

Unknown

Mean motion

0.42619 °/min

Orbital period

844.7 mins

BSTAR

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Other satellites on launch #79 in the year 2017 (2017-12-12 UTC)

GALILEO 19 (2C5), 43055

GALILEO 20 (2C6), 43056

GALILEO 22 (2C8), 43058

ARIANE 5 R/B, 43059

GALILEO 21 (2C7) 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.
317 mins	2025-07-05 09:17:57.611Z	309.861° NW	2025-07-05 10:40:57.611Z	27.48° NE	43.636°	2025-07-05 14:34:57.611Z	150.2° SSE

Authenticating...

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Check out GALILEO 21 (2C7), 43057 on other resources

View GALILEO 21 (2C7), 43057 on NASA - NSSDCA Website

View GALILEO 21 (2C7), 43057 on Heavens-Above

View GALILEO 21 (2C7), 43057 on Keep Track

View GALILEO 21 (2C7), 43057 on Celestrak

View GALILEO 21 (2C7), 43057 on Gunter's Space Page

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