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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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Identifier

43057, 2017-079C

Orbit

Active

Last TLE update

3 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 3 days ago

0 GALILEO 21 (2C7)
1 43057U 17079C   25193.30980672  .00000081  00000-0  00000-0 0  9997
2 43057  55.1825 230.8561 0004053 283.2597  76.7845  1.70474355 47194

Epoch: 2025-07-12T07:26Z

TLE epoch observation values (Epoch: 2025-07-12T07:26:07.3Z)

Latitude

0.00006°

Longitude

-171.10315°

Altitude

23,219.667 km

Speed

3.67 km/s

True Right ascension

15h 23m 30s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-9.42421°

Longitude

15.44607°

Altitude

23,224.548 km

Speed

3.669 km/s

Apparent Right ascension

03h 18m 49s

Apparent Declination

-15° 37' 12"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

11:46:00

Azimuth

281.979° WNW

Elevation

-37.967°

Doppler factor

Orbital elements

Apogee altitude

23,234.141 km

Perigee altitude

23,210.147 km

Semi-major axis

29,600.281 km

Eccentricity

0.00041

Inclination

55.1825°

RAAN

230.8561°

Arg. of periapsis

283.2597°

True anomaly

Unknown

Mean anomaly

76.7845°

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.
523 mins	2025-07-15 05:11:12.180Z	227.813° WSW	2025-07-15 10:00:12.180Z	27.47° NE	43.635°	2025-07-15 13:54:12.180Z	150.12° 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.