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GRACE-FO 1, 43476

Orbit data source: Space-Track

GRACE-FO 1, 43476 is an American payload satellite in LEO that was launched on Tue, 22 May 2018 UTC via an FALCON 9 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/43476?theme=dark&initialShowStats=false

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Identifier

43476, 2018-047A

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

ADS/Bremen

Mission

Operational Civil Science

Bus & Motor

FLEXBUS, N2 AOCS

Mass

600 kg wet, ~500 kg dry

Launch date (UTC)

2018-05-22 (8 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Half Hex Poly, 1.9 m

Radar Cross Section

5.603 m², Large (>1 m²)

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

TLE from 2 days ago

0 GRACE-FO 1
1 43476U 18047A   26171.41345382  .00002982  00000-0  77976-4 0  9992
2 43476  88.9918 197.5108 0013894  96.7082 263.5755 15.38279467450292

Epoch: 2026-06-20T09:55Z

TLE epoch observation values (Epoch: 2026-06-20T09:55:22.410Z)

Latitude

-0°

Longitude

140.03899°

Altitude

455.492 km

Speed

7.639 km/s

True Right ascension

13h 10m 02s

True Declination

0° 00' 00"

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

21:42:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

457.465 km

Perigee altitude

438.497 km

Semi-major axis

6,826.118 km

Eccentricity

0.00139

Inclination

88.9918°

RAAN

197.5108°

Arg. of periapsis

96.7082°

True anomaly

263.41732°

Mean anomaly

263.5755°

Eccentric anomaly

263.49641°

Mean motion

3.84842 °/min

Orbital period

93.54 mins

BSTAR

0.000077976

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Other satellites on launch #47 in the year 2018 (2018-05-22 UTC)

FALCON 9 DEB, 43483 (Decayed)

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GRACE-FO 1 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.
6 mins	2026-06-22 13:59:59.073Z	0.879° NNE	2026-06-22 14:02:59.073Z	354.252° N	44.927°	2026-06-22 14:05:59.073Z	182.183° SSW
4 mins	2026-06-23 02:04:59.073Z	176.391° S	2026-06-23 02:05:59.073Z	173.048° S	41.764°	2026-06-23 02:08:59.073Z	359.734° N

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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 GRACE-FO 1, 43476 on other resources

View GRACE-FO 1, 43476 on NASA - NSSDCA Website

View GRACE-FO 1, 43476 on Heavens-Above

View GRACE-FO 1, 43476 on Keep Track

View GRACE-FO 1, 43476 on Celestrak

View GRACE-FO 1, 43476 on Gunter's Space Page

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

GRACE-FO 1, 43476

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: 2026-06-20T09:55:22.410Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #47 in the year 2018 (2018-05-22 UTC)

GRACE-FO 1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out GRACE-FO 1, 43476 on other resources

Documentation

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