April 2025 Release Highlights

Database Contents

For a snapshot of NED's holdings at the time of this release, please see current holdings.

References and New Data

893,354 sources from 1,547 new references including:
  • 223,871 sources with spectroscopic redshifts from HETDEX Public Source Catalog 1: 220 K Sources Including Over 50 K Lya Emitters from an Untargeted Wide-area Spectroscopic Survey (Mentuch Cooper, E. et al., 2023ApJ...943..177M )
  • 95,404 sources with spectroscopic redshifts from HectoMAP: The Complete Redshift Survey (Data Release 2) (Sohn, J. et al., 2023ApJ...945...94S).
  • Galaxies and redshifts from several JWST articles, including JADES NIRSpec initial data release for the Hubble Ultra Deep Field: Redshifts and line fluxes of distant galaxies from the deepest JWST Cycle 1 NIRSpec multi-object spectroscopy (Bunker et al., 2024A&A...690A.288B). The Cosmos in Its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N (Hainline et al., 2024ApJ...964...71H), The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S (Helton et al., 2024ApJ...962..124H), Enhanced Subkiloparsec-scale Star Formation: Results from a JWST Size Analysis of 341 Galaxies at 5 < z < 14 (Morishita, T. et al., 2024ApJ...963....9M),
  • 16,502 galaxies and redshifts from The 50 Mpc Galaxy Catalog (50 MGC): Consistent and Homogeneous Masses, Distances, Colors, and Morphologies (Ohlson, D. et al., 2024AJ....167...31O ).
  • 5,696 sources from The SRG/eROSITA All-Sky Survey. First catalog of superclusters in the western Galactic hemisphere (Liu, A. et al., 2024A&A...683A.130L ).
  • 3,117 sources from The miniJPAS survey. Optical detection of galaxy clusters with PZWav (Doubrawa, L. et al., 2024A&A...685A..98D ).

Cross-IDs and New Objects

  • 792,986 sources from the literature cross-matched with NED objects.
  • 100,368 new NED objects including galaxies, quasars, clusters of galaxies, supernovae, globular clusters as well as unidentified radio, visual, infrared, X-ray, and gamma-ray sources.
  • 1,571 of the ingested sources are Supernovae from the Transient Name Server through February 2025.

    • Redshifts

    • 708,003 additional redshifts
    • 318,453 more objects with redshifts

    For highlights in previous releases, please see Archived Release Notes.

    Last Change: 2025-04-25