View source for List of exoplanets discovered before 2000

{{Short description|None}}
This is a '''list of exoplanets discovered before 2000'''.<ref>{{cite web |url=https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars |title=NASA Exoplanet Archive  |author=<!--Not stated--> |date= |website= |publisher= |access-date= 20 December 2019 |quote=}}</ref>

For [[exoplanets]] detected only by [[Methods of detecting exoplanets#Radial velocity|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,<ref name="Campbell1988"/> the planet [[Gamma Cephei Ab]] was not confirmed until 2003,<ref name="Hatzes2003"/> and that is listed as its discovery year in exoplanet databases. Thus, this planet is in the [[List of exoplanets discovered between 2000–2009]].
{|class="wikitable plainrowheaders sortable" style="width: 100%; font-size: 83%; text-align: center;"
  !Name
  !data-sort-type="number"|Mass ({{Jupiter mass}})
  !data-sort-type="number"|Radius ({{Jupiter radius}})
  !data-sort-type="number"|[[Orbital period|Period]] (days)
  !data-sort-type="number"|[[Semi-major and semi-minor axes#Astronomy|Semi-major axis]] (AU)
  !data-sort-type="number"|[[Planetary equilibrium temperature|Temp.]] ([[Kelvin|K]])
  !Discovery method
  !data-sort-type="number"|Disc. Year
  !data-sort-type="number"|Distance (ly)
  !data-sort-type="number"|Host star mass ({{solar mass|link=yes}})
  !data-sort-type="number"|[[Effective temperature|Host star temp.]] (K)
  !Remarks
|-
|[[16 Cygni Bb]]
|2.38
|
|799.5
|1.66
|
|style="background:#00FF00"|radial vel.
|1996
|68.99
|1.04
|5750
|
|-
|[[23 Librae b]]
|1.61
|
|258.18
|0.81
|
|style="background:#00FF00"|radial vel.
|1999
|85.46
|1.07
|5736
|
|-
|[[47 Ursae Majoris b]]
|2.53
|
|1078
|2.1
|
|style="background:#00FF00"|radial vel.
|1996
|45.02
|1.08
|5892
|Proper name '''Taphao Thong'''
|-
|[[51 Pegasi b]]
|0.46
|
|4.230785
|0.0527
|
|style="background:#00FF00"|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
|style="background:#00FF00"|radial vel.
|1996
|41.06
|0.905
|5196
|Proper name '''Galileo'''
|-
|[[70 Virginis b]]
|7.49
|
|116.688
|0.481
|
|style="background:#00FF00"|radial vel.
|1996
|58.42
|1.09
|5495
|
|-
|[[109 Piscium b]]
|6.383
|
|1075.69
|2.14
|
|style="background:#00FF00"|radial vel.
|1999
|108.1
|1.11
|5600
|
|-
|[[Gliese 86 b]]
|4.42
|
|15.76491
|0.11
|
|style="background:#00FF00"|radial vel.
|1999
|35.18
|0.83
|5182
|
|-
|[[Gliese 876 b]]
|2.2756
|
|61.1166
|0.208317
|
|style="background:#00FF00"|radial vel.
|1998
|15.25
|0.32
|3129
|
|-
|[[HD 75289 b]]
|0.49
|
|3.50927
|0.05
|1260
|style="background:#00FF00"|radial vel.
|1999
|95.05
|1.29
|6117
|
|-
|[[HD 89744 b]]
|8.35
|
|256.78
|0.917
|
|style="background:#00FF00"|radial vel.
|1999
|126.2
|1.86
|6291
|
|-
|[[HD 130322 b]]
|1.15
|
|10.70871
|0.0925
|720
|style="background:#00FF00"|radial vel.
|1999
|104.1
|0.92
|5387
|Proper name '''Eiger'''
|-
|[[HD 168443 b]]
|7.659
|
|58.11247
|0.2931
|
|style="background:#00FF00"|radial vel.
|1998
|129.4
|0.995
|5491
|
|-
|[[HD 177830 b]]
|1.69
|
|410.1
|1.14
|
|style="background:#00FF00"|radial vel.
|1999
|205.1
|1.70
|4901
|
|-
|[[HD 187123 b]]
|0.523
|
|3.0965828
|0.0426
|
|style="background:#00FF00"|radial vel.
|1998
|150.1
|1.0
|5830
|
|-
|[[HD 192263 b]]
|0.56
|
|24.3556
|0.15
|486
|style="background:#00FF00"|radial vel.
|1999
|64.08
|0.66
|4976
|Proper name '''Beirut'''
|-
|[[HD 195019 b]]
|3.98
|
|18.20132
|0.14
|
|style="background:#00FF00"|radial vel.
|1998
|123
|1.21
|5751
|
|-
|[[HD 209458 b]]
|0.73
|1.39
|3.52474859
|0.04707
|1459
|style="background:#00FF00"|radial vel.
|1999
|157.8
|1.23
|6091
|Informally named '''Osiris'''
|-
|[[HD 210277 b]]
|1.29
|
|442.19
|1.13
|
|style="background:#00FF00"|radial vel.
|1998
|69.51
|1.01
|5538
|
|-
|[[HD 217107 b]]
|1.30
|
|7.12682
|0.08
|
|style="background:#00FF00"|radial vel.
|1998
|65.47
|1.00
|5622
|
|-
|[[HD 222582 b]]
|8.37
|~1.12
|572.38
|1.34
|
|style="background:#00FF00"|radial vel.
|1999
|137.7
|1.12
|5790
|
|-
|[[Iota Horologii b]]
|2.27
|
|302.8
|0.92
|
|style="background:#00FF00"|radial vel.
|1999
|56.51
|1.25 <ref>{{Cite web|url=https://www.eso.org/public/images/eso0809a/|title = The planet-host star Iota Horologii}}</ref>
|6167
|
|-
|[[PSR B1257+12 b]]
|0.000063
|
|25.262
|0.19
|
|style="background:#FF7519"|timing
|1994
|~2000
|1.4
|
|Proper name '''Draugr'''. Least massive exoplanet known.
|-
|[[PSR B1257+12 c]]
|0.014
|
|66.5419
|0.36
|
|style="background:#FF7519"|timing
|1992
|~2000
|1.4
|
|Proper name '''Poltergeist'''
|-
|[[PSR B1257+12 d]]
|0.012
|0.13
|98.2114
|0.46
|
|style="background:#FF7519"|timing
|1992
|~2000
|1.4
|
|Proper name '''Phobetor'''
|-
|[[PSR B1620-26 b]]
|2.5
|
|
|23.0
|
|style="background:#FF7519"|timing
|1993
|12400
|1.35
|
|
|-
|[[Rho Coronae Borealis b]]
|1.045
|
|39.8458
|0.2196
|614
|style="background:#00FF00"|radial vel.
|1997
|57.0
|0.889
|5627
|
|-
|[[Tau Boötis b]]
|5.95
|
|3.3124568
|0.049
|
|style="background:#00FF00"|radial vel.
|1996
|51.07
|1.34
|6400
|
|-
|[[Upsilon Andromedae b]]
|0.6876
|~1.8
|4.617033
|0.059222
|
|style="background:#00FF00"|radial vel.
|1996
|43.74
|1.3
|6183
|Proper name '''Saffar'''
|-
|[[Upsilon Andromedae c]]
|1.981
|
|241.258
|0.827774
|
|style="background:#00FF00"|radial vel.
|1999
|43.74
|1.3
|6183
|Proper name '''Samh'''
|-
|[[Upsilon Andromedae d]]
|4.132
|~1.02
|1276.46
|2.51329
|
|style="background:#00FF00"|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.<ref name="Kiefer2019"/>

==Specific exoplanet lists==
{{#section:List of exoplanets|fullList}}

==References==
{{reflist|refs=

<ref name="Campbell1988">{{cite journal | title=A Search for Substellar Companions to Solar-type Stars | last1=Campbell | first1=Bruce | last2=Walker | first2=G. A. H. | last3=Yang | first3=S. | journal=The Astrophysical Journal | volume=331 | issue= | page=902 | year=1988 | bibcode=1988ApJ...331..902C | doi=10.1086/166608 | doi-access=free }}</ref>

<ref name="Hatzes2003">{{cite journal | title=A Planetary Companion to Gamma Cephei A | last1=Hatzes | first1=Artie P. | last2=Cochran | first2=William D. | last3=Endl | first3=Michael | last4=McArthur | first4=Barbara | last5=Paulson | first5=Diane B. | last6=Walker | first6=Gordon A. H. | last7=Campbell | first7=Bruce | last8=Yang | first8=Stephenson | display-authors=1 | journal=The Astrophysical Journal | volume=599 | issue=2 | pages=1383–1394 | year=2003 | arxiv=astro-ph/0305110 | bibcode=2003ApJ...599.1383H | doi=10.1086/379281 | s2cid=11506537 }}</ref>

<ref name="Kiefer2019">{{cite journal |title=Determining the mass of the planetary candidate HD 114762 b using Gaia |arxiv=1910.07835 |last1=Kiefer |first1=Flavien |journal=Astronomy & Astrophysics |date=17 October 2019|volume=632 |pages=L9 |doi=10.1051/0004-6361/201936942 |bibcode=2019A&A...632L...9K |s2cid=204743831 }}</ref>

}}

{{Exoplanet}}

[[Category:Lists of exoplanets|2000]]
[[Category:20th century-related lists|exoplanets]]