| Quasar | Origin of name | Notes |
| Twin Quasar | From the fact that two images of the same quasar are produced by gravitational lensing. | |
| Einstein Cross | From the fact that gravitational lensing of the quasar forms a near perfect Einstein cross, a concept in gravitational lensing. | |
| From the fact that there are three bright images of the same gravitationally lensed quasar. | There are actually four images; the fourth is faint. |
| Cloverleaf | From its appearance having similarity to the leaf of a clover. It has been gravitationally lensed into four images, of roughly similar appearance. | |
| Teacup Galaxy | The name comes from the shape of the extended emission, which is shaped like the handle of a teacup. The handle is a bubble shaped by quasar winds or small-scale radio jets. | Low redshift, highly obscured type 2 quasar. |
| Pōniuāʻena | The third most distant quasar known as of 2025, named for its early formation at most 100 million years after the Big Bang. | Named as part of the A Hua He Inoa program by the ʻImiloa Astronomy Center. |
| Quasar | Images | Lens | Notes |
| Twin Quasar | 2 | YGKOW G1 | First gravitationally lensed object discovered
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| Triple Quasar | 4 | | Originally discovered as 3 lensed images, the fourth image is faint. It was the second gravitationally lensed quasar discovered. |
| Einstein Cross | 4 | Huchra's Lens | First Einstein Cross discovered |
| RX J1131-1231's quasar | 4 | RX J1131-1231's elliptical galaxy | RX J1131-1231 is the name of the complex, quasar, host galaxy and lensing galaxy, together. The quasar's host galaxy is also lensed into a Chwolson ring about the lensing galaxy. The four images of the quasar are embedded in the ring image. |
| Cloverleaf | 4 | | Brightest known high-redshift source of CO emission |
| QSO B1359+154 | 6 | CLASS B1359+154 and three more galaxies | First sextuply-imaged galaxy |
| SDSS J1004+4112 | 5 | Galaxy cluster at z = 0.68 | First quasar discovered to be multiply image-lensed by a galaxy cluster and currently the third largest quasar lens with the separation between images of 15 |
| SDSS J1029+2623 | 3 | Galaxy cluster at z = 0.6 | The current largest-separation quasar lens with 22.6 separation between furthest images |
| SDSS J2222+2745 | 6 | Galaxy cluster at z = 0.49 | First sextuply-lensed galaxy Third quasar discovered to be lensed by a galaxy cluster. Quasar located at z = 2.82 |
| RX J0911.4+0551 | 4 | Galaxy located at z = 0.76 | Gravitationally lensed object discovered by the ROSAT All-Sky survey in 1997. Quasar located at z = 2.800. |
| CLASS B1152+199 | 2 | Galaxy located at z = 0.43 | |
| HE 1104-1805 | 2 | Galaxy located at z = 0.72 | Also known as Double Hamburger. |
| HE 2149-2745 | 2 | Galaxy at z = 0.60 | Gravitationally lensed broad absorption object at z = 2.033 |
| FBQ 0951+2635 | 2 | Galaxy located at z = 0.26 | |
| HE0435-1223 | 4 | Elliptical galaxy of HE0435-1223 at z = 0.45 | Quasar located at z = 1.689. Components arranged in cross figuration. |
| SBS 0909+532 | 2 | Lens galaxy of SBS 0909+532 at z = 0.83 | Originally interpreted as a binary quasar but later revealed as a gravitationally lensed object. |
| UM 673 | 2 | Lens galaxy at z = 0.49 | Quasar located at at z = 2.71, first discovered by J. Surdej |
| CTQ 327 | 2 | Lens galaxy between z = 0.4 and z= 0.6 | |
| CTQ 414 | 2 | | Discovered in 1999. Quasar located at z = 1.29. |
| HE 0230-2130 | 5 | | Complex lensed system. Quasar located at z = 2.130. |
| SDSS J1001+5027 | 2 | Lens galaxy at z = 0.3 | |
| SDSS J1206+4332 | 2 | Lens galaxy at z = 0.74 | |
| SDSS J0246-0825 | 2 | Lens galaxy at z = 0.724 | Discovered by Scott Burles. |
| SDSS J0904+1512 | 2 | | Discovered in the SDSS Quasar Lens Search |
| SDSS J1054+2733 | 2 | | Discovered in the SDSS Quasar Lens Search |
| SDSS J1620+1203 | 2 | Lens galaxy at z = 0.39 | Discovered in the SDSS Quasar Lens Search. Quasar located at z = 1.158 |
| SDSS J0746+4403 | 2 | Lens galaxy at z = 0.513 | Discovered in 2007. Quasar located at z = 2.00 |
| Quasars | Count | Notes |
| quasars of SDSS J0841+3921 protocluster | 4 | First quasar quartet discovered. |
| LBQS 1429-008 | 3 | First quasar triplet discovered. It was first discovered as a binary quasar, before the third quasar was found. |
QQ2345+007
Large Quasar GroupsLarge quasar groups are bound to a filament of mass, and not directly bound to each other.
| LQG | Count | Notes | Webster LQG | 5 | First LQG discovered. At the time of its discovery, it was the largest structure known. | Huge-LQG | 73 | The largest structure known in the observable universe, as of 2013.[ ] |
List of quasars with apparent superluminal jet motionThis is a list of quasars with jets that appear to be superluminal due to relativistic effects and line-of-sight orientation. Such quasars are sometimes referred to as superluminal quasars.
Quasars that have a recessional velocity greater than the speed of light are very common. Any quasar with z > 1 is receding faster than c, while z exactly equal to 1 indicates recession at the speed of light. Early attempts to explain superluminal quasars resulted in convoluted explanations with a limit of z = 2.326, or in the extreme z < 2.4. The majority of quasars lie between z = 2 and z = 5.
Most distant quasarsIn 1964 a quasar became the most distant object in the universe for the first time. Quasars would remain the most distant objects in the universe until 1997, when a pair of non-quasar galaxies would take the title. In cosmic scales distance is usually indicated by redshift which is a measure of recessional velocity and inferred distance due to cosmological expansion.
| Quasar | Date | Distance | Notes | | UHZ1 | 2023– | z = 10.2 | Current distance record holder | | QSO J0313−1806 | 2021–2023 | z = 7.64 | | | ULAS J1342+0928 | 2017–2021 | z = 7.54 | | | ULAS J1120+0641 | 2011–2017 | z = 7.085 | Not the most distant object when discovered. First quasar with z > 7. | CFHQS J2329-0301 | 2007–2011 | z = 6.43 | Not the most distant object when discovered. It did not exceed IOK-1, which was discovered in 2006. | SDSS J114816.64+525150.3 | 2003–2007 | z = 6.419 | Not the most distant object when discovered. It did not exceed HCM 6A galaxy lensed by Abell 370 at z = 6.56, discovered in 2002. Also discovered around the time of discovery was a new most distant galaxy, SDF J132418.3+271455 at z = 6.58. | SDSS J1030+0524 | 2001–2003 | z = 6.28 | Most distant object when discovered. First object with z > 6. | SDSS 1044-0125 | 2000–2001 | z = 5.82 | Most distant object when discovered. It exceeded galaxy SSA22-HCM1 as the most distant object. | RD300 | 2000 | z = 5.50 | Not the most distant object when discovered. It did not surpass galaxy SSA22-HCM1. | SDSSp J120441.73−002149.6 | 2000 | z = 5.03 | Not the most distant object when discovered. It did not surpass galaxy SSA22-HCM1. | SDSSp J033829.31+002156.3 | 1998–2000 | z = 5.00 | First quasar discovered with z > 5. Not the most distant object when discovered. It did not surpass galaxy BR1202-0725 LAE. | | PC 1247+3406 | 1991–1998 | z = 4.897 | Most distant object when discovered. | | PC 1158+4635 | 1989–1991 | z = 4.73 | Most distant object when discovered. | | Q0051-279 | 1987–1989 | z = 4.43 | Most distant object when discovered. | Q0000-26 | 1987 | z = 4.11 | Most distant object when discovered. | PC 0910+5625 | 1987 | z = 4.04 | Most distant object when discovered; second quasar with z > 4. | Q0046–293 | 1987 | z = 4.01 | Most distant object when discovered; first quasar with z > 4. | Q1208+1011 | 1986–1987 | z = 3.80 | Most distant object when discovered and a gravitationally-lensed double-image quasar. From the time of discovery to 1991, had the least angular separation between images, 0.45. | PKS 2000-330 | 1982–1986 | z = 3.78 | Most distant object when discovered. | OQ172 | 1974–1982 | z = 3.53 | Most distant object when discovered. | OH471 | 1973–1974 | z = 3.408 | Most distant object when discovered; first quasar with z > 3. Nicknamed "the blaze marking the edge of the universe". | | 4C 05.34 | 1970–1973 | z = 2.877 | Most distant object when discovered. The redshift was so much greater than the previous record that it was believed to be erroneous, or spurious. | 5C 02.56 | 1968–1970 | z = 2.399 | Most distant object when discovered. | 4C 25.05 | 1968 | z = 2.358 | Most distant object when discovered. | PKS 0237-23 | 1967–1968 | z = 2.225 | Most distant object when discovered. | 4C 12.39 | 1966–1967 | z = 2.1291 | Most distant object when discovered. | 4C 01.02 | 1965–1966 | z = 2.0990 | Most distant object when discovered. | | 3C 9 | 1965 | z = 2.018 | Most distant object when discovered; first quasar with z > 2. | | 3C 147 | 1964–1965 | z = 0.545 | First quasar to become the most distant object in the universe, beating radio galaxy 3C 295. | | 3C 48 | 1963–1964 | z = 0.367 | Second quasar redshift measured. Redshift was discovered after publication of 3C273's results prompted researchers to re-examine spectroscopic data. Not the most distant object when discovered. The radio galaxy 3C 295 was found in 1960 with z = 0.461. | | 3C 273 | 1963 | z = 0.158 | First quasar redshift measured. Not the most distant object when discovered. The radio galaxy 3C 295 was found in 1960 with z = 0.461. |
Most powerful quasars
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