UPSA Object Registry

Everything science has measured, on one card.

Astronomy keeps its knowledge in separate archives — one for what an object is, another for how precisely it was measured, others for planets, for small bodies, for galaxies. This register pulls them onto a single card per object and keeps every published value with the paper it came from.

Any identifier works — NGC 224, HIP 21421, Gaia DR3 2081900940499099136, 433 Eros. Coordinates open a cone search. A name we do not hold yet is fetched from the archives on the spot.

3,919,196objects held
9,421,656published values
7,482,546cross-identifiers
13,327citations
64,445catalogues indexed

Other ways to look

the same records, different geometry
The solar neighbourhood stars within 100 pc, from above Large-scale structure right ascension against redshift Cone search everything held around a point

Holdings by class

weekly refresh
Asteroid 1,556,250 Star 1,437,977 Quasar 448,668 Galaxy 289,494 Agn 105,052 Source 22,548 Nebula 13,754 Galaxy group 10,377 Cluster 10,282 Exoplanet 8,617 Transient 8,545 Comet 4,076 Gravitation 1,519 Other 965 Association 868 Moon 187 Dwarf planet 9 Planet 8

Most studied

by publication count
ObjectTypePapersV
LMC Galaxy 19,401 0.4
Galactic Center Region 16,632 —
M 31 AGN 13,808 3.44
SMC Galaxy 12,515 2.2
Local Group GroupG 9,504 —
Magellanic Clouds GroupG 8,145 —
M 87 AGN 7,950 8.63
Virgo Cluster ClG 7,214 —
M 1 SNRemnant 6,584 —
M 33 GtowardsGroup 6,295 5.72
M 82 AGN 6,211 8.41
3C 273 BLLac 6,058 14.83

Recently deepened

opened by a reader, then harvested
ObjectTypePapers
NGC 6444 OpenCluster 25
LSPM J0842+0114 HighPM* 9
Cl Basel 13 OpenCluster 15
SDSS J120914.95+292114.1 QSO 6
SDSS J091220.26+075537.7 WhiteDwarf 7
Gaia DR2 5328279154041856000 Star 5
SDSS J123514.47+100258.5 QSO 7
SDSS J100326.08+331932.1 QSO 8
GRB 210321A gammaBurst 25
COSMOS2015 828947 Galaxy 7
COSMOS2015 853492 Galaxy 12
COSMOS2015 836970 Galaxy 6

How the register grows

  1. Seeded

    The whole Solar System, every confirmed exoplanet with its published parameter sets, and the well-cited part of SIMBAD are loaded and held here, not proxied.

  2. On demand

    Ask for something we do not hold and the registry queries SIMBAD, JPL and NED live, writes the answer into the register and keeps it.

  3. Deepened

    Opening an object triggers a harvest: every SIMBAD measurement table, the Gaia DR3 row, NED redshifts and the VizieR spectral energy distribution.

  4. Refreshed weekly

    Archives publish continuously. A weekly pass re-reads them, adds what is new and re-harvests the records people asked for.

Ingest log

last passes
ArchivePassFinished (UTC)RowsStatus
registry dedupe 2026-09-13 04:08 0 ok
VizieR catalog-index 2026-09-13 03:32 64,446 ok
SIMBAD ident nbref>=12 2026-09-13 03:32 39,708 budget
SIMBAD allfluxes nbref>=5 2026-09-13 03:31 1 budget
SIMBAD refresh since 2026-09-03 2026-09-13 03:31 10,568 ok
JPL SBDB small-bodies 2026-09-13 03:31 4,076 budget
NASA Exoplanet Archive planets 2026-09-13 03:31 6,366 ok
registry dedupe 2026-09-06 03:51 11 ok