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List of exoplanets discovered before 2000

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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)[2] Discovery method Disc. Year Distance (ly) Host star mass (M☉) Host star temp. (K) Remarks
109 Piscium b 6.21 1075.2 2.131 radial vel. 1999 106 1.11 5680
16 Cygni Bb 1.68 798.5 1.681 radial vel. 1996 69.8 0.99 5674
23 Librae b 1.59 258.19 0.81 radial vel. 1999 72 1.1 5585
47 Ursae Majoris b 2.53 1078 2.1 radial vel. 1996 45.9 1.03 5892
51 Pegasi b 0.472 4.230785 0.0527 radial vel. 1995 50.1 1.12 5793 Also known as Dimidium. 51 Pegasi b was the first exoplanet to be discovered orbiting a main sequence star.
55 Cancri b 0.8306 14.65152 0.115227 radial vel. 1996 40.9 0.91 5196
70 Virginis b 7.4 116.6926 0.481 radial vel. 1996 59.1 1.09 5439
Gliese 86 b 3.91 15.76491 0.113 radial vel. 1999 35.6 0.77 5151
Gliese 876 b 2.2756 61.1166 0.208317 radial vel. 1998 15 0.33 3129 also designated GJ 876 b
HD 75289 b 0.467 3.509267 0.0482 radial vel. 1999 94.4 1.21 6095
HD 89744 b 8.44 256.78 0.918 radial vel. 1999 130 1.56 6291
HD 130322 b 1.15 10.70871 0.0925 radial vel. 1999 97.1 0.92 5387
HD 168443 b 7.659 58.11247 0.2931 radial vel. 1998 123.5 0.99 5491
HD 177830 b 1.49 406.6 1.2218 radial vel. 1999 192.5 1.47 4949
HD 187123 b 0.523 3.0965828 0.0426 radial vel. 1998 156.3 1 5830
HD 192263 b 0.733 24.3587 0.15312 radial vel. 1999 64.9 0.81 4996
HD 195019 b 3.69 18.20132 0.1388 radial vel. 1998 121.8 1.07 5788
HD 209458 b 1.32 3.52474859 radial vel. 1999 153.6 1.1 6071
HD 210277 b 1.29 442.19 1.138 radial vel. 1998 69.4 1.01 5555
HD 217107 b 1.39 7.126816 0.0748 radial vel. 1998 64.3 1.02 5646
HD 222582 b 7.75 572.38 1.347 radial vel. 1999 136.8 0.99 5727
Iota Horologii b 2.13 312 0.91 radial vel. 1999 56.2 6080
PSR B1257+12 b 0.00006 25.262 0.19 timing 1994 2000 Least massive exoplanet known. Also known as Draugr.
PSR B1257+12 c 0.01353 66.5419 0.36 timing 1992 2000 Also known as Poltergeist
PSR B1257+12 d 0.01227 98.2114 0.46 timing 1992 2000 Also known as Phobetor
Tau Boötis b 4.32 3.3124568 0.049 radial vel. 1996 51 1.34 6400
Upsilon Andromedae b 0.6876 4.617033 0.059222 radial vel. 1996 43.9 1.3 6213
Upsilon Andromedae c 1.981 241.258 0.827774 radial vel. 1999 43.9 1.3 6213
Upsilon Andromedae d 4.132 1276.46 2.51329 radial vel. 1999 43.9 1.3 6213

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 thought to be an example of a brown dwarf.[3]

Specific exoplanet lists

Lists of exoplanets

Lists of exoplanets by year of discovery


References

  1. ^ "NASA Exoplanet Archive". Retrieved 20 December 2019.
  2. ^ "The Extrasolar Planets Encyclopaedia". Retrieved 2015-11-09.
  3. ^ Kiefer, Flavien (17 October 2019). "Determining the mass of the planetary candidate HD 114762 b using Gaia". arXiv:1910.07835 [astro-ph.EP].
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