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HERMES 4, 63833

Orbit data source: Space-Track

HERMES 4, 63833 is a payload satellite owned by ASI (IT) in SSO that was launched on Sat, 15 Mar 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 src="https://www.satcat.com/sats-embedded/63833?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/63833?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

63833, 2025-052BP

Orbit

SSO

Country

Related business

Italian Space Agency (IT)

Manufacturer

MILANP/INAFI

Mission

Operational Civil Astronomy

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

5 kg wet, 5 kg dry

Launch date (UTC)

2025-03-15 (2 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.2 m

Radar Cross Section

0.035 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 HERMES 4
1 63833U 25052BP  26264.67720473  .00006703  00000-0  21833-3 0  9999
2 63833  97.3735 158.0621 0002026 172.9217 187.2054 15.32167455 84717

Epoch: 2026-09-21T16:15Z

TLE epoch observation values (Epoch: 2026-09-21T16:15:10.488Z)

Latitude

-0.00001°

Longitude

-86.2852°

Altitude

473.831 km

Speed

7.628 km/s

True Right ascension

10h 32m 14s

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

12:42:20

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

467.682 km

Perigee altitude

464.908 km

Semi-major axis

6,844.432 km

Eccentricity

0.0002

Inclination

97.3735°

RAAN

158.0621°

Arg. of periapsis

172.9217°

True anomaly

187.20249°

Mean anomaly

187.2054°

Eccentric anomaly

187.20394°

Mean motion

3.83298 °/min

Orbital period

93.92 mins

BSTAR

0.00021833

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Other satellites on launch #52 in the year 2025 (2025-03-15 UTC)

OBJECT BJ, 63396 (Decayed)

DROID.002, 63223

UNICORN-2Q, 63491 (Decayed)

UNICORN-2P, 63981 (Decayed)

HERMES-3, 63835

HYDRA-W, 63490 (Decayed)

HERMES-6, 63489

LEMUR 2 MARACHE-FRAN, 63262

LEMUR 2 EMERSONROSE, 63261

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HERMES 4 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.
4 mins	2026-09-23 06:27:06.623Z	324.326° NNW	2026-09-23 06:28:06.623Z	294.449° NW	30.22°	2026-09-23 06:31:06.623Z	227.396° WSW
5 mins	2026-09-23 16:59:06.623Z	159.804° S	2026-09-23 17:01:06.623Z	70.866° E	77.098°	2026-09-23 17:04:06.623Z	351.707° 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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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 HERMES 4, 63833 on other resources

View HERMES 4, 63833 on NASA - NSSDCA Website

View HERMES 4, 63833 on Heavens-Above

View HERMES 4, 63833 on Keep Track

View HERMES 4, 63833 on Celestrak

View HERMES 4, 63833 on Gunter's Space Page

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

HERMES 4, 63833

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-09-21T16:15:10.488Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 2025 (2025-03-15 UTC)

HERMES 4 Visibility forecast

Co-orbital & Co-planar RSOs

Check out HERMES 4, 63833 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago