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3C 273

3C 273 Observation data (Epoch J2000) Constellation Virgo Right ascension 12h 29m 06.7s Declination +02° 03' 09? Redshift 0.158339 ± 0.000067 Distance 2.443 Gly (749 Mpc) (luminosity distance) Type Blazar; Sy1 Apparent magnitude (V) 12.9 Notable features optically-brightest quasar, first spectrum of a quasar Other designations PGC 41121 and HIP 60936 See also: Quasar, List of quasars 3C 273 is a quasar located in the constellation Virgo. It was the first quasar ever to be identified.It is the optically brightest quasar in our sky (m ~12.9), and one of the closest with a redshift, z, of 0.158. A luminosity distance of DL = 749 megaparsecs (2.4 Gly) may be calculated from z. It is also one of the most luminous quasars known, with an absolute magnitude of -26.7, meaning that if it were only as distant as Pollux (~10 parsecs) it would appear nearly as bright in the sky as the Sun. Since the sun's absolute magnitude is 4.83, it means that the quasar is over 4 trillion times brighter than the sun. Its mass has been measured to be 886 ± 187 million solar masses through broad emission-line reverberation mapping. ^ "Best image of bright quasar 3C 273". ESA/Hubble Picture of the Week. Retrieved 20 November 2013.  ^ a b c d e f "NASA/IPAC Extragalactic Database". Results for 3C 273. Retrieved 2006-10-26.  ^ "3C 273". XJET: X-Ray Emission from Extragalactic Radio Jets. 2008-01-11. Retrieved 2010-04-05.  ^ a b Uchiyama, Yasunobu; Urry, C. Megan; Cheung, C. C.; Jester, Sebastian; Van Duyne, Jeffrey; Coppi, Paolo; Sambruna, Rita M.; Takahashi, Tadayuki; Tavecchio, Fabrizio; Maraschi, Laura (2006). "Shedding New Light on the 3C 273 Jet with the Spitzer Space Telescope". The Astrophysical Journal 648 (2): 910–921. arXiv:astro-ph/0605530. Bibcode:2006ApJ...648..910U. doi:10.1086/505964.  ^ Schmidt, M. (1963). "3C 273: a star-like object with large red-shift.". Nature 197 (4872): 1040–1040. Bibcode:1963Natur.197.1040S. doi:10.1038/1971040a0.  ^ "The Quasi-Stellar Radio Sources 3C 48 and 3C 273". The Astrophysics Journal. Retrieved 25 April 2014.  ^ Peterson, B. M.; Ferrarese, L.; Gilbert, K. M.; Kaspi, S.; Malkan, M. A.; Maoz,D. ; Merritt, D.; Netzer, H.; Onken, C. A.; Pogge, R. W.; Vestergaard, M.; Wandel, A. (2004). "Central Masses of AGNs. II.". The Astrophysical Journal 613 (2): 682–699. arXiv:astro-ph/0407299. Bibcode:2004ApJ...613..682P. doi:10.1086/423269.
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