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E3TESTER, 66662

Orbit data source: Space-Track

E3TESTER, 66662 is a payload satellite owned by KARI (KR) in SSO that was launched on Wed, 26 Nov 2025 UTC via an NURI launch vehicle from the Naro Space Center, South Korea (NSC). 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/66662?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/66662?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

66662, 2025-274N

Orbit

SSO

Country

KR / SKOR

Related business

Korea Aerospace Research Institute (KR)

Manufacturer

KARI

Mission

Operational Civil Technology

Bus & Motor

CUBESAT 12U, Unknown motor

Mass

17 kg wet, 17 kg dry

Launch date (UTC)

2025-11-26 (6 months ago)

Launch vehicle

NURI

Launch site

Naro Space Center, South Korea (NSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 1.1 m

Radar Cross Section

0.035 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 E3TESTER
1 66662U 25274N   26152.29295831  .00002983  00000-0  28357-3 0  9991
2 66662  97.7494  82.0173 0016704  73.9184 286.3874 14.94120248 27865

Epoch: 2026-06-01T07:01Z

TLE epoch observation values (Epoch: 2026-06-01T07:01:51.597Z)

Latitude

-0.00004°

Longitude

86.76995°

Altitude

584.886 km

Speed

7.57 km/s

True Right ascension

05h 28m 04s

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

03:19:08

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

593.746 km

Perigee altitude

570.494 km

Semi-major axis

6,960.257 km

Eccentricity

0.00167

Inclination

97.7494°

RAAN

82.0173°

Arg. of periapsis

73.9184°

True anomaly

286.20365°

Mean anomaly

286.3874°

Eccentric anomaly

286.29554°

Mean motion

3.73771 °/min

Orbital period

96.32 mins

BSTAR

0.00028357

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Other satellites on launch #274 in the year 2025 (2025-11-26 UTC)

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E3TESTER 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	2026-06-01 18:25:44.063Z	114.314° SE	2026-06-01 18:28:44.063Z	63.469° ENE	19.48°	2026-06-01 18:30:44.063Z	28.398° NE
5 mins	2026-06-01 20:01:44.063Z	218.101° SW	2026-06-01 20:03:44.063Z	262.62° W	25.757°	2026-06-01 20:06:44.063Z	319.73° NNW
6 mins	2026-06-02 07:43:44.063Z	41.376° NE	2026-06-02 07:45:44.063Z	89.013° E	31.869°	2026-06-02 07:49:44.063Z	167.637° S

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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 E3TESTER, 66662 on other resources

View E3TESTER, 66662 on NASA - NSSDCA Website

View E3TESTER, 66662 on Heavens-Above

View E3TESTER, 66662 on Keep Track

View E3TESTER, 66662 on Celestrak

View E3TESTER, 66662 on Gunter's Space Page

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

E3TESTER, 66662

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-06-01T07:01:51.597Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #274 in the year 2025 (2025-11-26 UTC)

E3TESTER Visibility forecast

Co-orbital & Co-planar RSOs

Check out E3TESTER, 66662 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago