THE OPEN CATALOG OF EVERYTHING ABOVE

Every object in the sky.
Indexed.

Search 223 448 stars, planets, galaxies and black holes. Learn, visualize, and build on an open API.

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223 448 CATALOGUED60 091 093 SKY SOURCES16 SOURCE CATALOGSOPEN API · LIVE
[

BROWSE THE CATALOG

] 11 CLASSES · 88 REGIONS
01
Black holes ▸
14 catalogued
02
Stars ▸
124 271 catalogued
03
Planets ▸
8 catalogued
04
Exoplanets ▸
6336 confirmed
05
Galaxies ▸
64 158 catalogued
06
Nebulae ▸
433 catalogued
07
Star clusters ▸
935 catalogued
08
Moons ▸
459 catalogued
09
Asteroids ▸
22 343 tracked
10
Comets ▸
4072 tracked
11
Unclassified ▸
419 catalogued
12
Constellations ▸
88 regions of sky
[

START SOMEWHERE

] HAND-WRITTEN ENTRIES
Helix Nebula
Planetary nebula
655.0 ly
47 Tuc Cluster
Globular cluster
15 000 ly
16 Psyche
Main-belt asteroid
distance unknown
Moon
Moon of Earth
distance unknown
K2-18 b
Neptune-like planet
124.0 ly
Kepler-22 b
Neptune-like planet
634.8 ly
Ring Nebula
Planetary nebula
2570 ly
Checkmark Nebula
Nebula
5500 ly
[

WAYS IN

] RANKED LISTS AND CATALOGUES
NEAREST
What is closest to us?
Black holes▸
Gaia BH1 — 1560 ly away
TOP 14
Stars▸
Sun — 1.000 AU away
TOP 50
Galaxies▸
Andromeda Galaxy — 2.537 Mly away
TOP 50
Exoplanets▸
Proxima Cen b — 4.244 ly away
TOP 50
BRIGHTEST
What can I see with my own eyes?
Stars▸
Sun — apparent magnitude −26.74 (V)
TOP 50
Galaxies▸
Large Magellanic Cloud — apparent magnitude 0.29 (V)
TOP 50
Nebulae▸
Lower Sword — apparent magnitude 2.50 (V)
TOP 50
Star clusters▸
Pleiades — apparent magnitude 1.20 (V)
TOP 50
BIGGEST
What are the record holders?
Black holes▸
TON 618 — 6.6×10¹⁰ M☉
TOP 14
Exoplanets▸
V2376 Ori b — 7.78 R♃ · 556 208 km
TOP 50
Moons▸
Ganymede — 0.41 R⊕ · 2631 km
TOP 25
Asteroids▸
1 Ceres — 469.7 km
TOP 50
Comets▸
167P/CINEOS — 33.09 km
TOP 25
Planets▸
Jupiter — 0.98 R♃ · 69 911 km
TOP 8
NEWEST
What did we find most recently?
Exoplanets▸
DMPP-2 c — found in 2026
TOP 50
HISTORICAL CATALOGUES
What did observers before us write down?
Messier▸
M 1 — Crab Nebula
110 ENTRIES
Caldwell▸
C 1 — NGC 188
109 ENTRIES
OPEN API

The whole catalog, one endpoint away

Free for research and education. No key, no account, open CORS. Filter the catalog, resolve any designation, or ask what is above your horizon right now.

READ THE DOCS →
GET spacecatalog.org/api/v1/objects/sgr-a
{
  "name": "Sagittarius A*",
  "class": "supermassive_black_hole",
  "mass_msun": 4.15e6,
  "distance_ly": 26673
}