ASTERIA (ExoplanetSat, Arcsecond Space Telescope Enabling Research in Astrophysics)

Name ASTERIA (ExoplanetSat, Arcsecond Space Telescope Enabling Research in Astrophysics)
Type CubeSat
Units or mass 6U
Status Was operational until 2019-12-05, stopped transmitting and responding to commands (NASA news 2020-01-03 checked on 2020-01-04)
Launched 2017-08-14
NORAD ID 43020
Deployer NRCSD (NanoRacks CubeSat Deployer) [Quad-M]
Launcher Falcon 9
Deployment Deployed from ISS on 2017-11-20
Organisation NASA Jet Propulsion Laboratory
Institution Space agency
Entity Government (Civil / Military)
Nation US
Launch brokerer Nanoracks

Telescope to monitor a single start for two years to find transiting exoplanets.


Prototype nanosatellite capable of monitoring a single, bright, sun-like star for two years. Previously called ExoplanetSat, it develop into a suite of nanosatellites, each focusing on one bright star at a time. The science motivation is to search for transiting exoplanets orbiting the brightest sun-like stars in the sky.


ASTERIA made a marginal detection of the known transiting exoplanet 55 Cancri e (∼ 2 R⊕), measuring a transit depth of 374 ± 170 ppm. This is the first detection of an exoplanet by a CubeSat.

Sources [1] [2] [3] [4] [5]
Space photos ASTERIA


Last modified: 2023-01-06
Detailed ASTERIA entry in the Database
Full Nanosats Database (much more data)

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Created by Erik Kulu


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