List of exoplanets discovered before 2000
From Wikipedia the free encyclopedia
This is a list of exoplanets discovered before 2000.[1]
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,[2] the planet Gamma Cephei Ab was not confirmed until 2003,[3] 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 (MJ) | Radius (RJ) | 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 [4] | 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
[edit]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.[5]
Specific exoplanet lists
[edit]- 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
Lists of exoplanets by year of discovery
[edit]- 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 (150)
- List of exoplanets discovered in 2016 (1497)
- List of exoplanets discovered in 2017 (158)
- List of exoplanets discovered in 2018 (303)
- List of exoplanets discovered in 2019 (172)
- 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 (303)
- List of exoplanets discovered in 2024 (227)
References
[edit]- ^ "NASA Exoplanet Archive". Retrieved 20 December 2019.
- ^ Campbell, Bruce; Walker, G. A. H.; Yang, S. (1988). "A Search for Substellar Companions to Solar-type Stars". The Astrophysical Journal. 331: 902. Bibcode:1988ApJ...331..902C. doi:10.1086/166608.
- ^ Hatzes, Artie P.; et al. (2003). "A Planetary Companion to Gamma Cephei A". The Astrophysical Journal. 599 (2): 1383–1394. arXiv:astro-ph/0305110. Bibcode:2003ApJ...599.1383H. doi:10.1086/379281. S2CID 11506537.
- ^ "The planet-host star Iota Horologii".
- ^ Kiefer, Flavien (17 October 2019). "Determining the mass of the planetary candidate HD 114762 b using Gaia". Astronomy & Astrophysics. 632: L9. arXiv:1910.07835. Bibcode:2019A&A...632L...9K. doi:10.1051/0004-6361/201936942. S2CID 204743831.
