| OQ 172 | |
|---|---|
 The quasar OQ 172. | |
| Observation data (J2000.0 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 45m 16.465s |
| Declination | +09° 58′ 36.073″ |
| Redshift | 3.540681 |
| Distance | 11.543 Gly |
| Apparent magnitude (V) | 17.78 |
| Apparent magnitude (B) | 18.58 |
| Characteristics | |
| Type | GPS, FSRQ |
| Other designations | |
| LEDA 2828124, PKS 1442+101, NVSS J144516+095836, QSO B1442+101, TXS 1442+101, CoNFIG 200, IERS B1442+101 | |
OQ 172 (OHIO Q 172) is a quasar[1] located in the constellation of Boötes. It has a redshift of (z) 3.544,[2] making it one of the most distant quasars at the time of its discovery by astronomers in 1973.[3] This object was the record holder for almost a decade, before being surpassed by PKS 2000-330 in 1982 located at the redshift of (z) 3.78.[4]
- ^ Fomenko, A. F.; Levshakov, S. A.; Varshalovich, D. A.; Nebelitskii, V. B. (1984-02-01). "Spectra of the quasar OQ 172". Pisma V Astronomicheskii Zhurnal. 10: 83–89. Bibcode:1984PAZh...10...83F. ISSN 0320-0108.
- ^ Morton, D. C.; Peterson, B. A.; Chen, J.-S.; Wright, A. E.; Jauncey, D. L. (1989-12-01). "The spectrum of the QSO 1442 + 101 (OQ172) at intermediate dispersion". Monthly Notices of the Royal Astronomical Society. 241 (3): 595–612. doi:10.1093/mnras/241.3.595. ISSN 0035-8711.
- ^ Gurvits, L.I.; Schilizzi, R.T.; Barthel, P.D.; Kardashev, N.S.; Kellermann, K.L.; Lobanov, A.P. (1994). "Milliarcsecond structures of extremely distant quasars: 0336-017, 0636+680, 1442+101, and 2048+312". Astronomy & Astrophysics. 291 (3): 737–742. Bibcode:1994A&A...291..737G. ISSN 0004-6361.
- ^ Shaver, Peter (December 1987). "Ever more distant quasars?" (PDF). Nature. 330 (6147): 426. doi:10.1038/330426a0. ISSN 0028-0836.