Umbra / eo constellation
sourcingtypical 4/5 · 13 factssarUSAoperational
Umbra is an American space technology company, described by the company as 100% U.S. owned, engineered, and operated, that provides precision synthetic aperture radar (SAR) imagery. The company states it only sells what it flies itself, offering imaging in Dwell, Spotlight, and Scan modes.
key specs
faq
Who operates Umbra?
Umbra is operated by Umbra. (source, as of 2026-07-05)
How many Umbra satellites are active on orbit?
CelesTrak's catalog currently tracks 5 objects for Umbra. (source, as of 2026-07-11)
When did Umbra first launch?
Umbra first launched on 2021-06-30. (source, as of 2026-07-05)
imaging modes
Spotlight (25 cm to 1 m)resolution0.25 mswath5 km
Extended Dwellresolution0.25 mswath5 km
Scan (0.5 / 1 / 2 m, strips up to 100 km)resolution0.5 mswathnot stated
facts
operatorUmbra
countryUSA
sensor typessar
sats launched (total)unknown
sats active (claimed)unknown
sats active (verified)5
sats planned32
orbit522 km - 535 km, 97.51 degrees
first launch2021-06-30
latest launch2026-01-11
statusoperational
websiteumbra.space
resolution (m)0.25
revisitless than one hour for latitude bands +/- 67 degrees
spectral bandsX-band
sats active (verified) counts objects currently tracked in CelesTrak's catalog for this constellation. It is a tracking count, not an operator claim about satellite health.
orbit
orbit522 km - 535 km, 97.51 degrees
sats launched (total)unknown
sats active (claimed)unknown
sats active (verified)5
sats planned32
events
- notable2026-07-09NASA finds Umbra SAR data misses geolocation accuracy spec
timeline
- 20242024-12-04Umbra selected for NRO Strategic Commercial Enhancements Stage III (source, as of 2026-07-05)
- 20232023-07-27Umbra releases over $1 million of free SAR data via Open Data Program (source, as of 2026-07-05)
- 2023-04-18Umbra's sixth satellite Umbra-06 achieves first light within 48 hours (source, as of 2026-07-05)
- 20222022Umbra selected for NRO Commercial Radar Capabilities Stage II (per Umbra) (source, as of 2026-07-05)
- 20212021-07-16Umbra awarded $950M ceiling IDIQ contract following SpaceX launch (source, as of 2026-07-05)
- 2021-06-25Umbra launches its first commercial radar satellite on Transporter-2 (source, as of 2026-07-05)
- 2021-01-06Umbra Lab rebrands to Umbra ahead of first launch (source, as of 2026-07-05)
- 20192019-12-31Umbra prepares to launch first group of SAR microsatellites after stealth R&D (source, as of 2026-07-05)
sources
[1] umbra.space ↗
operatorfirst-party2026-07-05countryfirst-party2026-07-05sensor typesfirst-party2026-07-05sats plannedfirst-party2026-07-05websitefirst-party2026-07-05resolution (m)first-party2026-07-09
[4] celestrak.org ↗
sats active (verified)computed2026-07-11
Includes data from Gunter's Space Page: doc_sdat/umbra-sar-2001.htm