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LYRA-4, 64691

Orbit data source: Space-Track

LYRA-4, 64691 is a payload satellite owned by Echostar AU (AU) in SSO that was launched on Sat, 28 Jun 2025 UTC via an ELECTRON launch vehicle from the Rocket Lab Launch Complex (RLLC). 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/64691?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/64691?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

64691, 2025-140A

Orbit

SSO

Country

AU / AUS

Related business

Echostar Corp (US)

Manufacturer

Astro Digital

Mission

Operational Commercial Communications

Bus & Motor

CORVUS XL, Unknown motor

Mass

74 kg wet, 74 kg dry

Launch date (UTC)

2025-06-28 (1 year ago)

Launch vehicle

ELECTRON

Launch site

Rocket Lab Launch Complex (RLLC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 1.0 m

Radar Cross Section

0.425 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 LYRA-4
1 64691U 25140A   26171.34306706  .00000964  00000-0  15634-3 0  9995
2 64691  96.0062 290.9367 0012331 187.0095 173.0947 14.72503932 52528

Epoch: 2026-06-20T08:14Z

TLE epoch observation values (Epoch: 2026-06-20T08:14:00.993Z)

Latitude

-0.00002°

Longitude

-101.12649°

Altitude

664.756 km

Speed

7.52 km/s

True Right ascension

19h 23m 44s

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

07:22:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

658.729 km

Perigee altitude

641.396 km

Semi-major axis

7,028.199 km

Eccentricity

0.00123

Inclination

96.0062°

RAAN

290.9367°

Arg. of periapsis

187.0095°

True anomaly

173.11166°

Mean anomaly

173.0947°

Eccentric anomaly

173.10318°

Mean motion

3.68364 °/min

Orbital period

97.73 mins

BSTAR

0.00015634

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Other satellites on launch #140 in the year 2025 (2025-06-28 UTC)

ELECTRON KICK STAGE R/B, 64692

ELECTRON R/B, 64693 (Decayed)

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LYRA-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.
5 mins	2026-06-20 21:51:05.931Z	332.842° NNW	2026-06-20 21:54:05.931Z	288.338° WNW	17.72°	2026-06-20 21:56:05.931Z	257.225° W
6 mins	2026-06-21 07:13:05.931Z	113.805° SE	2026-06-21 07:16:05.931Z	60.387° ENE	22.091°	2026-06-21 07:19:05.931Z	18.1° NNE
6 mins	2026-06-21 08:50:05.931Z	219.332° SW	2026-06-21 08:52:05.931Z	257.087° W	26.2°	2026-06-21 08:56:05.931Z	325.38° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out LYRA-4, 64691 on other resources

View LYRA-4, 64691 on NASA - NSSDCA Website

View LYRA-4, 64691 on Heavens-Above

View LYRA-4, 64691 on Keep Track

View LYRA-4, 64691 on Celestrak

View LYRA-4, 64691 on Gunter's Space Page

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

LYRA-4, 64691

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-06-20T08:14:00.993Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #140 in the year 2025 (2025-06-28 UTC)

LYRA-4 Visibility forecast

Co-orbital & Co-planar RSOs

Check out LYRA-4, 64691 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago