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HYDROGNSS-1, 66762

Orbit data source: Space-Track

HYDROGNSS-1, 66762 is a payload satellite owned by ESA (ESA) in SSO that was launched on Fri, 28 Nov 2025 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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Iframe URL

https://www.satcat.com/sats-embedded/66762?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66762, 2025-276DA

Orbit

SSO

Country

ESA

Related business

European Space Agency (FR)

Manufacturer

SSTL

Mission

Operational Civil Earth Obs Sci

Bus & Motor

SSTL-21, Unknown motor

Mass

65 kg wet, 65 kg dry

Launch date (UTC)

2025-11-28 (7 months ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 3 Pan, 1.0 m

Radar Cross Section

0.684 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 HYDROGNSS-1
1 66762U 25276DA  26192.89362157  .00001599  00000-0  97820-4 0  9994
2 66762  97.4195 264.6739 0009976 333.1833  26.8880 15.11595833 34084

Epoch: 2026-07-11T21:26Z

TLE epoch observation values (Epoch: 2026-07-11T21:26:48.903Z)

Latitude

-0.00009°

Longitude

13.16985°

Altitude

528.264 km

Speed

7.602 km/s

True Right ascension

17h 38m 41s

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

19:43:09

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

535.2 km

Perigee altitude

521.42 km

Semi-major axis

6,906.447 km

Eccentricity

0.001

Inclination

97.4195°

RAAN

264.6739°

Arg. of periapsis

333.1833°

True anomaly

26.93976°

Mean anomaly

26.888°

Eccentric anomaly

26.91387°

Mean motion

3.78147 °/min

Orbital period

95.2 mins

BSTAR

0.00009782

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Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

FLOCK 4H 32, 66735

FOSSASAT2E24, 66780

GYEONGGISAT-1, 66771

LEMUR-2-CELIJO-SB-PK, 66781

LEMUR-2-STARLIGHT, 66783

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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

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HYDROGNSS-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	2026-07-12 17:04:48.018Z	36.064° NE	2026-07-12 17:07:48.018Z	91.213° ESE	26.405°	2026-07-12 17:10:48.018Z	154.188° SSE
5 mins	2026-07-13 05:21:48.018Z	209.238° SW	2026-07-13 05:23:48.018Z	267.579° W	31.038°	2026-07-13 05:26:48.018Z	328.251° NNW

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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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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 descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out HYDROGNSS-1, 66762 on other resources

View HYDROGNSS-1, 66762 on NASA - NSSDCA Website

View HYDROGNSS-1, 66762 on Heavens-Above

View HYDROGNSS-1, 66762 on Keep Track

View HYDROGNSS-1, 66762 on Celestrak

View HYDROGNSS-1, 66762 on Gunter's Space Page

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

HYDROGNSS-1, 66762

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-07-11T21:26:48.903Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #276 in the year 2025 (2025-11-28 UTC)

HYDROGNSS-1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out HYDROGNSS-1, 66762 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago