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PKS 2000−330
Hubble Legacy Archive WFPC2 image of PKS 2000−330
Observation data (Epoch J2000)
Constellation	Sagittarius
Right ascension	20^h 03^m 24.116^s^[1]
Declination	−32° 51′ 45.13″^[1]
Redshift	3.773^[2] 274,681 km/s^[1]
Distance	11.7 billion light-years (Light travel time)^[2] 22.7 billion light-years (present)^[2]
Type	Quasar^[1]
Apparent magnitude (V)	18.4 (SIMBAD)^[1] 19.0 (NED)^[2] 17.3 - 19.0^[3]
Other designations
2MASS J20032410−3251452, QSO B2000−330^[1]
See also: Quasar, List of quasars

PKS 2000−330 (also known as QSO B2000−330) is a quasar^[1] located in the constellation Sagittarius. When identified in 1982, it was the most distant and most luminous object known.^[3]

Distance measurements

The "distance" of a far away galaxy depends on the distance measurement used. With a redshift of 3.77,^[2] light from this active galaxy is estimated to have taken around 11.7 billion years to reach us.^[2] But since this galaxy is receding from Earth at an estimated rate of 274,681 km/s^[1] (the speed of light is 299,792 km/s), the present (co-moving) distance to this galaxy is estimated to be around 22.7 billion light-years (6947 Mpc).^[2]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h "PKS 2000-330". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2010-04-28.
^ ^a ^b ^c ^d ^e ^f ^g "NASA/IPAC Extragalactic Database". Results for PKS 2000-330. Retrieved 2010-04-28.
^ ^a ^b Peterson, B. A.; Savage, A.; Jauncey, D. L.; Wright, A. E. (1982). "PKS 2000-330 - A quasi-stellar radio source with a redshift of 3.78". Astrophysical Journal. 260: L27 – L29. Bibcode:1982ApJ...260L..27P. doi:10.1086/183863.

External links

Wikisky image of PKS 2000−330

Constellation of Sagittarius

Stars

Bayer	α (Rukbat) β¹ (Arkab Prior) β² (Arkab Posterior) γ¹ (W) γ² (Alnasl) δ (Kaus Media) ε (Kaus Australis) ζ (Ascella) η θ¹ θ² ι κ¹ κ² λ (Kaus Borealis) μ (Polis) ν¹ (Ainalrami) ν² ξ¹ ξ² ο π (Albaldah) ρ¹ ρ² σ (Nunki) τ υ φ χ¹ χ² χ³ ψ ω (Terebellum)
Flamsteed	1 3 4 5 6 7 9 11 12 14 15 16 17 18 21 23 24 25 26 28 29 30 31 33 43 (d) 50 51 (h¹) 52 (h²) 53 54 (e¹) 55 (e²) 56 (f) 57 59 (b) 60 (A) 61 (g) 62 (c) 63 65 63 Oph
Variable	U Y RS RY VX KW V348 V356 V630 V725 V1017 V1059 V3961 V4024 V4029 V4030 V4046 V4199 V4200 V4332 V4334 V4375 V4381 V4580 V4641 V4647 (Pistol Star) V4650 V4743 V4998 V5125 V5157 V5652 (Gumala) V5668 V5856
HR	6748 6762 6766 6836 6842 6907 6998 7029 7380 7631 7652 7659 7703
HD	163296 164604 (Pincoya) 166191 169142 170657 171238 177765 180902 181342 (Belel) 181720 (Sika) 187085 190647 316285
Other	2MASS J19281982−2640123 2MASS J18352154−3123385 Bursting Pulsar CWISEP J1935−1546 GCIRS 13E HATS-36 IRAS 17423−1755 IRAS 18162−2048 GCIRS 7 GCIRS 8* GCIRS 16SW Gomez's Hamburger G0.238−0.071 K2-2016-BLG-0005L KMT-2020-BLG-0414L LBV 1806-20 MACHO 176.18833.411 MACHO-1997-BLG-41 MACHO-98-BLG-35 MOA-2007-BLG-192L MOA-2007-BLG-400L MOA-2009-BLG-387L MOA-2010-BLG-477L MOA-2011-BLG-262L NGC 6822-WR 12 OGLE-2003-BLG-235L OGLE-2005-BLG-169L PSR J1747−2958 PSR J1748−2446ad PSR J1930−1852 Ross 154 S2 S55 S62 S4716 SAX J1808.4−3658 SGR J1745−2900 SWEEPS J175853.92−291120.6 SWIFT J1745−26 SWIFT J1756.9−2508 SWIFT J1818.0−1607 W33A WASP-67 WD 0032−317 WR 102 WR 102c WR 102ea WR 102ka WR 101-2 WR 104 WR 111

Exoplanets	HATS-36b HD 164604 b HD 181720 b K2-2016-BLG-0005Lb KMT-2022-BLG-0440L b MOA-2007-BLG-192Lb MOA-2007-BLG-400Lb MOA-2009-BLG-387Lb OGLE-2003-BLG-235Lb OGLE-2005-BLG-169Lb OGLE-2016-BLG-1928 OGLE-TR-10b OGLE-TR-56b

Star
clusters

NGC	6440 6520 6522 6528 6530 6540 6544 6553 6558 6569 6603 6624 6638 6642 6717 6723
Other	1806−20 cluster 2MASS-GC02 Arches Cluster CO−0.40−0.22 Messier 18 Messier 21 Messier 22 Messier 23 Messier 25 Messier 28 Messier 54 Messier 55 Messier 69 Messier 70 Messier 75 Quintuplet Cluster Small Sagittarius Star Cloud

Nebulae

NGC	6822 (Bubble Nebula) 6445 6559 6563 6565 6578 6589 6590 6818
Other	Barnard 92 G1.9+0.3 HCN−0.009−0.044 Lagoon Nebula Large Molecule Heimat M 1-42 M2-42 Omega Nebula Pistol Nebula RCW 145 Red Spider Nebula Ring Nebula Sh 2-16 Sh 2-18 Sh 2-19 Sh 2-20 Sh 2-37 Sh 2-42 Trifid Nebula

Galaxies

NGC	6822 6902
Other	MRC 2011−298 PKS 1830−211 PKS 2000−330 PKS 2004−447 Sagittarius Dwarf Irregular Galaxy Sagittarius Dwarf Spheroidal Galaxy

Galaxy clusters	ESO 593-8

Astronomical events	GLEAM-X J162759.5−523504.3

Distance measurements

See also

References

External links