# List of exoplanets discovered before 2000

This is a list of exoplanets discovered before 2000.
For exoplanets detected only by radial velocity, the mass value is actually a lower limit. (See Minimum mass for more information.)
While the existence of a substellar companion to Gamma Cephei was suspected since 1988, the planet Gamma Cephei Ab was not confirmed until 2003, and that is listed as its discovery year in exoplanet databases. Thus, this planet is in the List of exoplanets discovered between 2000–2009.
| Name | Mass (M$_J$) | Radius (R$_J$) | Period (days) | Semi-major axis (AU) | Temp. (K) | Discovery method | Disc. Year | Distance (ly) | Host star mass (M$_☉$) | Host star temp. (K) | Remarks |
| 16 Cygni Bb | 2.38 | | 799.5 | 1.66 | | radial vel. | 1996 | 68.99 | 1.04 | 5750 | |
| 23 Librae b | 1.61 | | 258.18 | 0.81 | | radial vel. | 1999 | 85.46 | 1.07 | 5736 | |
| 47 Ursae Majoris b | 2.53 | | 1078 | 2.1 | | radial vel. | 1996 | 45.02 | 1.08 | 5892 | Proper name Taphao Thong |
| 51 Pegasi b | 0.46 | | 4.230785 | 0.0527 | | radial vel. | 1995 | 50.45 | 1.12 | 5793 | Proper name Dimidium. First exoplanet discovered orbiting a main sequence star. |
| 55 Cancri b | 0.8306 | | 14.65152 | 0.115227 | 700 | radial vel. | 1996 | 41.06 | 0.905 | 5196 | Proper name Galileo |
| 70 Virginis b | 7.49 | | 116.688 | 0.481 | | radial vel. | 1996 | 58.42 | 1.09 | 5495 | |
| 109 Piscium b | 6.383 | | 1075.69 | 2.14 | | radial vel. | 1999 | 108.1 | 1.11 | 5600 | |
| Gliese 86 b | 4.42 | | 15.76491 | 0.11 | | radial vel. | 1999 | 35.18 | 0.83 | 5182 | |
| Gliese 876 b | 2.2756 | | 61.1166 | 0.208317 | | radial vel. | 1998 | 15.25 | 0.32 | 3129 | |
| HD 75289 b | 0.49 | | 3.50927 | 0.05 | 1260 | radial vel. | 1999 | 95.05 | 1.29 | 6117 | |
| HD 89744 b | 8.35 | | 256.78 | 0.917 | | radial vel. | 1999 | 126.2 | 1.86 | 6291 | |
| HD 130322 b | 1.15 | | 10.70871 | 0.0925 | 720 | radial vel. | 1999 | 104.1 | 0.92 | 5387 | Proper name Eiger |
| HD 168443 b | 7.659 | | 58.11247 | 0.2931 | | radial vel. | 1998 | 129.4 | 0.995 | 5491 | |
| HD 177830 b | 1.69 | | 410.1 | 1.14 | | radial vel. | 1999 | 205.1 | 1.70 | 4901 | |
| HD 187123 b | 0.523 | | 3.0965828 | 0.0426 | | radial vel. | 1998 | 150.1 | 1.0 | 5830 | |
| HD 192263 b | 0.56 | | 24.3556 | 0.15 | 486 | radial vel. | 1999 | 64.08 | 0.66 | 4976 | Proper name Beirut |
| HD 195019 b | 3.98 | | 18.20132 | 0.14 | | radial vel. | 1998 | 123 | 1.21 | 5751 | |
| HD 209458 b | 0.73 | 1.39 | 3.52474859 | 0.04707 | 1459 | radial vel. | 1999 | 157.8 | 1.23 | 6091 | Informally named Osiris |
| HD 210277 b | 1.29 | | 442.19 | 1.13 | | radial vel. | 1998 | 69.51 | 1.01 | 5538 | |
| HD 217107 b | 1.30 | | 7.12682 | 0.08 | | radial vel. | 1998 | 65.47 | 1.00 | 5622 | |
| HD 222582 b | 8.37 | ~1.12 | 572.38 | 1.34 | | radial vel. | 1999 | 137.7 | 1.12 | 5790 | |
| Iota Horologii b | 2.27 | | 302.8 | 0.92 | | radial vel. | 1999 | 56.51 | 1.25 | 6167 | |
| PSR B1257+12 b | 0.000063 | | 25.262 | 0.19 | | timing | 1994 | ~2000 | 1.4 | | Proper name Draugr. Least massive exoplanet known. |
| PSR B1257+12 c | 0.014 | | 66.5419 | 0.36 | | timing | 1992 | ~2000 | 1.4 | | Proper name Poltergeist |
| PSR B1257+12 d | 0.012 | 0.13 | 98.2114 | 0.46 | | timing | 1992 | ~2000 | 1.4 | | Proper name Phobetor |
| PSR B1620-26 b | 2.5 | | | 23.0 | | timing | 1993 | 12400 | 1.35 | | |
| Rho Coronae Borealis b | 1.045 | | 39.8458 | 0.2196 | 614 | radial vel. | 1997 | 57.0 | 0.889 | 5627 | |
| Tau Boötis b | 5.95 | | 3.3124568 | 0.049 | | radial vel. | 1996 | 51.07 | 1.34 | 6400 | |
| Upsilon Andromedae b | 0.6876 | ~1.8 | 4.617033 | 0.059222 | | radial vel. | 1996 | 43.74 | 1.3 | 6183 | Proper name Saffar |
| Upsilon Andromedae c | 1.981 | | 241.258 | 0.827774 | | radial vel. | 1999 | 43.74 | 1.3 | 6183 | Proper name Samh |
| Upsilon Andromedae d | 4.132 | ~1.02 | 1276.46 | 2.51329 | | radial vel. | 1999 | 43.74 | 1.3 | 6183 | Proper name Majriti |

## Bodies previously considered as candidates

HD 114762 b was once considered as the first discovered exoplanet. Found in 1989 by a team led by David Latham, it is now known to be a red dwarf star. In 1991 it was reported an exoplanet 10 times the mass of Earth was discovered around the pulsar, PSR B1829-10. It was subsequently retracted later in 1992.

## Specific exoplanet lists

Lists of exoplanets
* List of directly imaged exoplanets
* List of exoplanet extremes
* List of exoplanet firsts
* List of exoplanets discovered by the Kepler space telescope
* List of exoplanets observed during Kepler's K2 mission
* List of extrasolar candidates for liquid water
* List of hottest exoplanets
* List of coolest exoplanets
* List of multiplanetary systems
* List of nearest exoplanets
* List of nearest terrestrial exoplanet candidates
* List of potentially habitable exoplanets
* List of proper names of exoplanets
* List of largest exoplanets
* List of smallest exoplanets
* List of transiting exoplanets
* List of exoplanets and planetary debris around white dwarfs
* List of extrasolar planetary collisions

### Lists of exoplanets by year of discovery

* List of exoplanets discovered before 2000 (31)
* List of exoplanets discovered between 2000–2009 (377)
* List of exoplanets discovered in 2010 (109)
* List of exoplanets discovered in 2011 (179)
* List of exoplanets discovered in 2012 (149)
* List of exoplanets discovered in 2013 (151)
* List of exoplanets discovered in 2014 (870)
* List of exoplanets discovered in 2015 (144)
* List of exoplanets discovered in 2016 (1497)
* List of exoplanets discovered in 2017 (152)
* List of exoplanets discovered in 2018 (300)
* List of exoplanets discovered in 2019 (170)
* List of exoplanets discovered in 2020 (249)
* List of exoplanets discovered in 2021 (257)
* List of exoplanets discovered in 2022 (313)
* List of exoplanets discovered in 2023 (307)
* List of exoplanets discovered in 2024 (284)
* List of exoplanets discovered in 2025 (16)