POOS::OBSERVATION_OSRecord book

Catalog Record Book

Superlatives computed directly from the catalog's measured and derived parameters — the biggest, hottest, densest, nearest, and fastest of 501 objects. Every ranking is real data; click any entry to open it.

Largest bodiesby radius
  1. 1Laniakea Supercluster2.46e+24 km
  2. 2Cosmic Web1.42e+24 km
  3. 3Universe4.40e+23 km
  4. 4Messier 87 (M87)4.50e+21 km
  5. 5Andromeda (M31)1.04e+21 km
  6. 6Pinwheel (M101)9.42e+20 km
Most massiveby mass
  1. 1Coma Cluster2.59e+45 kg
  2. 2Virgo Cluster2.39e+45 kg
  3. 3Perseus Cluster1.32e+45 kg
  4. 4Fornax Cluster1.39e+44 kg
  5. 5Messier 87 (M87)4.77e+42 kg
  6. 6M493.98e+42 kg
Hottest surfacesby temperature
  1. 1R136a146,000 K
  2. 2WR 10445,000 K
  3. 3Meissa37,700 K
  4. 4Eta Carinae35,200 K
  5. 5Mintaka29,500 K
  6. 6Alnitak29,500 K
Most luminous starsby luminosity
  1. 1Eta Carinae5.00e+6 L☉
  2. 2R136a14.60e+6 L☉
  3. 3Pistol Star1.60e+6 L☉
  4. 4Alnilam5.37e+5 L☉
  5. 5Stephenson 2-184.40e+5 L☉
  6. 6UY Scuti3.40e+5 L☉
Densest bodiesmass ÷ volume
  1. 1Kepler-452 b8.87 g/cm³
  2. 2Styx8.29 g/cm³
  3. 3LHS 1140 b8.25 g/cm³
  4. 4Kepler-36b7.3 g/cm³
  5. 5HD 219134 c6.97 g/cm³
  6. 655 Cancri e6.68 g/cm³
Strongest surface gravityg = GM/R²
  1. 1Sirius B4.03e+5 g⊕
  2. 2Procyon B1.11e+5 g⊕
  3. 3EZ Aquarii C196 g⊕
  4. 4Teegarden's Star188 g⊕
  5. 5TRAPPIST-1176 g⊕
  6. 6EZ Aquarii B165 g⊕
Highest escape velocityv = √(2GM/R)
  1. 1Sirius B6,800 km/s
  2. 2Procyon B4,310 km/s
  3. 3R136a11,380 km/s
  4. 4Meissa1,030 km/s
  5. 5WR 104977 km/s
  6. 6Acrux933 km/s
Nearest to Earthby distance
  1. 1Mercury0.387 AU
  2. 2Parker Solar Probe0.388 AU
  3. 3MESSENGER0.39 AU
  4. 4Solar Orbiter0.5 AU
  5. 5BepiColombo0.5 AU
  6. 6Venus0.723 AU
Most distantby distance
  1. 1S5 0014+813.31e+6 Mly
  2. 2TON 6181.72e+6 Mly
  3. 3Observable Universe46,500 Mly
  4. 4Sombrero (M104)31,000 Mly
  5. 5Messier 87 (M87)17,200 Mly
  6. 6Centaurus A (NGC 5128)13,600 Mly
Oldest starsby age
  1. 1Kapteyn's Star11.5 Gyr
  2. 255 Cancri10.2 Gyr
  3. 3Barnard's Star10 Gyr
  4. 4Gliese 5818 Gyr
  5. 5TRAPPIST-17.6 Gyr
  6. 6Arcturus7.1 Gyr
Fastest orbitsmean orbital velocity
  1. 1TOI-1696 b319 km/s
  2. 2Kepler-78b273 km/s
  3. 3KELT-9 b254 km/s
  4. 4WASP-12 b233 km/s
  5. 555 Cancri e228 km/s
  6. 6TOI-849 b227 km/s
Most eccentric orbitsby eccentricity
  1. 13I/ATLAS6.14
  2. 22I/Borisov3.36
  3. 3ʻOumuamua1.2
  4. 4Hyakutake1
  5. 5Hale-Bopp0.995
  6. 61P/Halley0.967
Highest redshiftmost distant in z
  1. 1GN-z11z = 10.6
  2. 2Cosmos Redshift 7z = 6.6
  3. 3S5 0014+81z = 3.37
  4. 4TON 618z = 2.22
  5. 5Comet Galaxyz = 0.223
  6. 63C 273z = 0.158