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[1]CelesTrak (opens in new tab)orbital elements
[2]GCAT / J. McDowell (opens in new tab)launch catalog
[3]Wikidata (opens in new tab)metadata enrichment
[4]SatNOGS DB (opens in new tab)radio transmitters (CC BY-SA 4.0)

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Catalog Operators Showcases Method Developers Pricing

Index/Operators/Korea Aerospace Research Institute/66662

SSOOperationalPayload

E3T-1 (E3TESTER-1)

NORAD 66662COSPAR 2025-274NEpoch Oct 21, 2026

E3T-1 (E3TESTER-1) is a payload in SSO orbit, operated by Korea Aerospace Research Institute, launched 2025.

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Operator

Korea Aerospace Research InstituteProbable

via GCAT — Jonathan McDowell's General Catalog

Country

South KoreaProbable

via GCAT — Jonathan McDowell's General Catalog

Launch date

2025-11-26Probable

via GCAT — Jonathan McDowell's General Catalog

Object class

PAYLOADProbable

via GCAT — Jonathan McDowell's General Catalog

Operational status

OPERATIONALProbable

via CelesTrak SATCAT

Launch mass (kg)

17Probable

via GCAT — Jonathan McDowell's General Catalog

Orbital regime

LLEO/SProbable

via GCAT — Jonathan McDowell's General Catalog

Launch site

Not availableUnknown

source unknown

Launch vehicle

Not availableUnknown

source unknown

Not available in the current data

· Alternate names
· Constellation membership

Data quality

Quality90 / 100

OrbitalWiki

Open satellite records with source claims attached. Use the UI for lookup or the API for products, research, and internal tools.

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Statistics

How many satellites are in orbit right now?
How many satellites are launched each year?
How many satellites still work?
How many Starlink satellites are there?
Statistics
What is the oldest satellite still in orbit?
What orbits are satellites in?
Which countries operate the most satellites?
Which operators run the most satellites?

Radio

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Product

About
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Change feed
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Status

Account

Contact
Dashboard
Log in
Preferences
Sign up

Sources

[1]CelesTrak (opens in new tab)orbital elements
[2]GCAT / J. McDowell (opens in new tab)launch catalog
[3]Wikidata (opens in new tab)metadata enrichment

Related satellites

SNUGLITE-IIISame launch
K-HEROSame launch
KOMPSAT-7Same operator
KSLV-II DUMMYSame operator
KSLV-II R/BSame operator

Where this record sits

All Korea Aerospace Research Institute satellites
South Korea satellites and space activity
Everything in SSO

It went up on launch 2025-274, alongside everything else on that flight

See it moving on the 3D globe alongside every other active object, propagated in your browser.

How many satellites are in orbit right now?

Use this data

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//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Oct 22, 2026.

[4]

SatNOGS DB (opens in new tab)radio transmitters (CC BY-SA 4.0)

Legal

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OrbitalWiki / open database / ODbL-1.0Orbital data is approximate and not for operations