NASA / IPAC Extragalactic Database
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The contents and services span the entire observed spectrum from gamma rays through radio frequencies. As new observations are published, they are cross- identified or statistically associated with previous data and integrated into a unified database to simplify queries and retrieval. Seamless connectivity is also provided to data in NASA astrophysics mission archives (IRSA, HEASARC, MAST), to the astrophysics literature via ADS, and to other data centers around the world.
10/31/2025
The October 2025 NED content release is now public!
This includes:
- 368K sources from the literature were ingested, including 316K cross-matches with NED objects
and 52K new objects, increasing NED objects with redshifts by 104K.
- 80K satellites and background objects with spectroscopic redshifts around nearby galaxies from the
Satellites Around Galactic Analogs (SAGA; Mao et al., 2024) survey.
- 11K new galaxies at intermediate to high redshifts from HST (WISP; Battisti et al., 2024)
and JWST (JADES; D'Eugenio et al., 2025) studies.
- The Object Type field in NED is now separated into Physical Types (e.g., G, GPair, QSO), where available,
and a new EM Region field (e.g., Vis, Xray).
See our release news page at http://ned.ipac.caltech.edu/Documents/Overview/Release
Also, please spread the word about the document "Best Practices for Data Publication in the Astronomical
Literature (Chen et al. 2022 https://ned.ipac.caltech.edu/uri/ADS::Bibcode/2022ApJS..260....5C)".
About NED | NASA/IPAC Extragalactic Database The NASA/IPAC Extragalactic Database (NED) is funded by the National Aeronautics and Space Administration under Award Number 80NSSC21M0037, and operated by the California Institute of Technology.
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