SATLASUltraviolet · Space
ULTRASAT
PlannedLaunch planned for around 2027.
Launch to geostationary orbit is anticipated in 2027, arranged by NASA.
A wide-field near-ultraviolet telescope (230–290 nm) with a 204 deg²square degreeUnit of solid angle: one degree by one degree on the sky. The whole sky is about 41,253 deg²; the full Moon covers about 0.2 deg². field, in geosynchronous orbit, to catch the first hours of supernovae (shock breakout and cooling), tidal disruption events and counterparts of neutron-star mergerscompact binary coalescenceThe inspiral and merger of two black holes, two neutron stars or one of each. The signal sweeps up in frequency and amplitude (a chirp) until the objects merge; its shape gives their masses, spins and distance.. Led by the Weizmann Institute and the Israel Space Agency, with a NASA launch.
- Operator
- Weizmann Institute, ISA, NASA
- Orbit
- Geosynchronous orbit
- Passband
- 230 nm – 290 nm
- Launch
- 2027 (target)
Passband
Sky coverage
Continuous, high-cadencecadenceThe interval between successive measurements of the same field or target. Sets which variability timescales a time series can resolve: TESS reaches 20 s, Rubin revisits each field every few nights. monitoring of wide fields, an all-sky NUV survey and rapid target-of-opportunity response.
Archives
Sources
Verified 15 November 2026.
Other ultraviolet facilities: GALEX