August 2023 Release Highlights

Database Contents

Tabular summaries of NED's current holdings are presented here. Graphic summaries are presented here.

References and Object Pointers

171,196 new object links (pointers) to 1,342 new references including:

  • 17,474 radio sources from Tracing Milky Way scattering by compact extragalactic radio sources (Koryukova, T. A. et al., 2022MNRAS.515.1736K)
  • Over 33,000 spectroscopic redshifts from The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: Quasar Properties from Data Releases 6 to 9 (Jin, Jun-Jie et al., 2023ApJS..265...25J), and OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release (Childress,M.J. et al., 2017MNRAS.472..273C), and CANDELS Lya Emission At Reionization (CLEAR) survey (Simons H.W.W. et al., 2023ApJS..266...13S)
  • 1,207 Clusters of Galaxies from The XMM Cluster Survey analysis of the SDSS DR8 redMaPPer catalogue (Giles, P.A. et al., 2022MNRAS.516.3878G)
  • 23 dropout galaxies at z ~ 9-16 from A Comprehensive Study of Galaxies at z ~ 9-16 Found in the Early JWST Data: Ultraviolet Luminosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch (Yuichi, H. et al., 2023ApJS..265....5H)

Cross-IDs and New Objects

  • 153,358 sources from the literature cross-identified with NED objects
  • 27,164 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
  • 658 Supernovae through July 2023 from Transient Name Server


  • 98,234 additional redshifts
  • 23,625 more objects with redshifts

NED Facilitates Gravitational Wave Counterpart Searches

The NED gravitational wave follow-up (GWF) service is continuing to cross-match galaxies with LIGO-Virgo-KAGRA (LVK) GW events for the fourth observing run. Recent updates to NED-GWF include the displaying of additional GW event information and the utilization of a new galaxy prioritization scheme based on the joint WISE luminosity and the 3D volume probabilities. Additionally, the service is now using a well-vetted galaxy sample extracted directly from the NED database called the Local Volume Sample (NED-LVS; Cook et al. 2023). NED-LVS uses a subset of ~2 million objects with distances (based on redshifts and redshift-independent distances) out to 1000 Mpc. Photometry from all-sky surveys (GALEX, 2MASS, and AllWISE) are also extracted, with ~90% of objects having at least one measurement. These fluxes are used to derive physical properties (SFR and stellar mass) and to estimate the completeness relative to expected local luminosity densities. For instance, NED-LVS is ~70% complete in the volume of LVK S230518h at 200 Mpc. For more details or to download the entire sample please go to the NED-LVS webpage.

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