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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)

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; previously informally named Bellerophon. 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
Gamma Cephei Ab 1.85 903.3 2.05 radial vel. 1988 44.16 1.4 4744 Proper name Tadmor
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 8.37 572.38 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 [2] 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 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 Informally named Methuselah. Oldest exoplanet known[3]
Rho Coronae Borealis b 1.045 39.8458 0.2196 614 radial vel. 1997 57.0 0.889 5627 Controversial
Tau Boötis b 5.95 3.3124568 0.049 radial vel. 1996 51.07 1.34 6400
Upsilon Andromedae b 0.6876 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 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.[4]


Specific exoplanet lists


Lists of exoplanets


References


  1. "NASA Exoplanet Archive". Retrieved 20 December 2019.
  2. "The planet-host star Iota Horologii".
  3. Britt, Robert Roy (2003). "Primeval Planet: Oldest Known World Conjures Prospect of Ancient Life" (PDF). Space.com. Archived from the original (PDF) on 2013-12-19. Retrieved 2013-12-19.
  4. 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.


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