List of nearest exoplanets
There are known exoplanets, or planets outside our solar system that orbit a star, as of ; only a small fraction of these are located in the vicinity of the Solar System. Within, there are 97 exoplanets listed as confirmed by the NASA Exoplanet Archive. Among the over 400 known stars within 10 parsecs, around 60 have been confirmed to have planetary systems; 51 stars in this range are visible to the naked eye, nine of which have planetary systems.
The first report of an exoplanet within this range was in 1998 for a planet orbiting around Gliese 876, and the latest as of 2020 is one around AU Microscopii. The closest exoplanet found is Proxima Centauri b, which was confirmed in 2016 to orbit Proxima Centauri, the closest star to our Solar System. HD 219134 has six exoplanets, the highest number discovered for any star within this range.
Most known nearby exoplanets orbit close to their star and have highly eccentric orbits. A majority are significantly larger than Earth, but a few have similar masses, including two planets which may be less massive than Earth. Several confirmed exoplanets are hypothesized to be potentially habitable, with Proxima Centauri b and three around Gliese 667 C considered the most likely candidates. The International Astronomical Union took a public survey in 2015 about renaming some known extrasolar bodies, including the planets around Epsilon Eridani and Fomalhaut.
Exoplanets within 10 parsecs
Host star system | Host star system | Host star system | Host star system | Companion exoplanet | Companion exoplanet | Companion exoplanet | Companion exoplanet | Companion exoplanet | Companion exoplanet | Companion exoplanet | Companion exoplanet | Notes and additional planetary observations |
Name | Distance | Apparent magnitude | Mass | Label | Mass | Radius | Semi-major axis | Orbital period | Eccentricity | Inclination | Discovery year | Notes and additional planetary observations |
Sun° | 0 | 1 | ' | 0.3829 | 0.387 | ' | 0.205 | — | — | |||
Sun° | 0 | 1 | ' | 1 | 1 | ' | 0.0167 | — | — | |||
Sun° | 0 | 1 | ' | ' | 5.20 | 0.0488 | — | — | ||||
Proxima Centauri# | 4.2441 | 11.13 | 0.123 | b↑ | 0.0486 | 0.109 | ~133? | 2016 | 1 candidate | |||
Proxima Centauri# | 4.2441 | 11.13 | 0.123 | c | — | 1.489 | 1,928 | 0.04 | 133 | 2020 | 1 candidate | |
Barnard's Star | 5.958 | 0.144 | b | — | 0.430 | 232 | 0.04 | — | 2018 | |||
Wolf 359# | 7.895 | 0.09 | c | — | 0.018 | 0.15 | — | 2019 | ||||
Wolf 359# | 7.895 | 0.09 | b | — | 1.845 | 0.04 | — | 2019 | ||||
Lalande 21185 | 8.307 | 0.46 | b | — | 0.068 | 0.04 | — | 2017 | ||||
Epsilon Eridani | 10.446 | 0.83 | — | 3.39 | 0.50 | ~25? | 2000 | 1 inferred planet and a disc | ||||
Lacaille 9352# | 10.721 | 0.503 | b | — | 0.067 | 0.03 | — | 2019 | ||||
Lacaille 9352# | 10.721 | 0.503 | c | — | 0.119 | 0.03 | — | 2019 | ||||
Lacaille 9352# | 10.721 | 0.503 | d | — | 0.175 | 0.04 | — | 2019 | ||||
Ross 128 | 11.007 | 0.168 | b↑ | 0.0496 | 0.12 | — | 2017 | |||||
Struve 2398 B# | 11.490 | 0.248 | b | — | 0.261 | 0.06 | — | 2019 | ||||
Struve 2398 B# | 11.490 | 0.248 | c | — | 0.428 | 0.03 | — | 2019 | ||||
Groombridge 34 A# | 11.618 | 0.38 | b | — | 0.072 | 0.094 | ~61? | 2014 | ||||
Groombridge 34 A# | 11.618 | 0.38 | c | — | 5.4 | 7,600 | 0.27 | ~61? | 2018 | |||
Tau Ceti# | 11.753 | 0.78 | — | 0.133 | 0.06 | — | 2017 | 2 retracted and 1 candidate | ||||
Tau Ceti# | 11.753 | 0.78 | — | 0.243 | 0.23 | — | 2017 | 2 retracted and 1 candidate | ||||
Tau Ceti# | 11.753 | 0.78 | ↑ | 0.538 | 0.18 | — | 2017 | 2 retracted and 1 candidate | ||||
Tau Ceti# | 11.753 | 0.78 | — | 1.33 | 0.16 | — | 2017 | 2 retracted and 1 candidate | ||||
Epsilon Indi A | 11.869 | 0.762 | b | — | 11.55 | 0.26 | 64.25 | 2002 | Not confirmed until 2018 | |||
Gliese 1061# | 11.980 | 0.113 | b | — | 0.021 | <0.31 | — | 2019 | two solutions for d's orbit | |||
Gliese 1061# | 11.980 | 0.113 | c | — | 0.035 | <0.29 | — | 2019 | two solutions for d's orbit | |||
Gliese 1061# | 11.980 | 0.113 | d | — | 0.052 | <0.54 | — | 2019 | two solutions for d's orbit | |||
YZ Ceti# | 12.108 | 12.1 | 0.130 | b | — | 0.0156 | 0.0 | — | 2017 | 1 candidate | ||
YZ Ceti# | 12.108 | 12.1 | 0.130 | c | — | 0.0209 | 0.04 | — | 2017 | 1 candidate | ||
YZ Ceti# | 12.108 | 12.1 | 0.130 | d | — | 0.0276 | 0.03 | — | 2017 | 1 candidate | ||
Luyten's Star# | 12.199 | 11.94 | 0.29 | c | — | 0.0365 | 0.12 | — | 2017 | |||
Luyten's Star# | 12.199 | 11.94 | 0.29 | b↑ | 0.090 | 0.03 | — | 2017 | ||||
Luyten's Star# | 12.199 | 11.94 | 0.29 | d | — | 0.712 | 0.17 | — | 2019 | |||
Luyten's Star# | 12.199 | 11.94 | 0.29 | e | — | 0.849 | 0.03 | — | 2019 | |||
Teegarden's Star# | 12.496 | 0.08 | b | — | 0.0252 | 0 | — | 2019 | ||||
Teegarden's Star# | 12.496 | 0.08 | c | — | 0.0443 | 0 | — | 2019 | ||||
Kapteyn's Star# | 12.829 | 0.28 | — | 0.311 | 0.07 | — | 2014 | 1 disputed candidate | ||||
Wolf 1061# | 14.046 | 0.25 | — | 0.0375 | 0.03 | — | 2015 | |||||
Wolf 1061# | 14.046 | 0.25 | ↑ | 0.0890 | 0.03 | — | 2015 | |||||
Wolf 1061# | 14.046 | 0.25 | — | 0.421 | 0.02 | — | 2015 | |||||
Gliese 83.1# | 14.584 | 0.14 | c | — | 0.016 | 0.09 | — | 2019 | ||||
Gliese 83.1# | 14.584 | 0.14 | d | — | 0.406 | 0.15 | — | 2019 | ||||
Gliese 83.1# | 14.584 | 0.14 | b | — | 0.881 | 0.22 | — | 2019 | ||||
Gliese 674 | 14.839 | 0.35 | b | — | 0.039 | 0.23 | — | 2007 | ||||
Gliese 687# | 14.840 | 0.41 | b | — | 0.163 | 0.03 | — | 2014 | ||||
Gliese 687# | 14.840 | 0.41 | c | — | 1.193 | 0.03 | — | 2019 | ||||
Gliese 876# | 15.250 | 0.33 | d | — | 0.0208 | 0.12 | 59.5 | 2005 | ||||
Gliese 876# | 15.250 | 0.33 | c | — | 0.133 | 0.001 | 59.5 | 2000 | ||||
Gliese 876# | 15.250 | 0.33 | b | — | 0.213 | 0.001 | 59.5 | 1998 | ||||
Gliese 876# | 15.250 | 0.33 | e | — | 0.342 | 0.18 | 59.5 | 2010 | ||||
Gliese 832# | 16.194 | 0.45 | ↑ | 0.164 | 0.06 | — | 2014 | |||||
Gliese 832# | 16.194 | 0.45 | b | — | 3.67 | 0.06 | — | 2008 | ||||
AD Leonis | 16.197 | 0.41 | b | — | 0.025 | 0.03 | — | 2019 | ||||
40 Eridani A | 16.386 | 0.84 | b | — | 0.224 | 0.04 | ~72? | 2018 | ||||
Gliese 3323# | 17.533 | 12.2 | 0.164 | b↑ | 0.0328 | — | 2017 | |||||
Gliese 3323# | 17.533 | 12.2 | 0.164 | c | — | 0.126 | — | 2017 | ||||
Gliese 251# | 18.204 | 0.372 | b | — | 0.0204 | — | 2017 | |||||
Gliese 251# | 18.204 | 0.372 | c | — | 0.974 | 607 | 0.03 | — | 2019 | |||
LP 816-60 | 18.311 | 0.23 | b | — | — | 93.9 | — | — | 2019 | |||
Gliese 205# | 18.592 | 0.63 | b | — | 0.109 | 16.9 | 0.11 | — | 2019 | |||
Gliese 205# | 18.592 | 0.63 | c | — | 0.689 | 271 | 0.04 | — | 2019 | |||
Gliese 229 A# | 18.777 | 0.58 | c | — | 0.339 | 0.19 | — | 2020 | Ab not confirmed until 2020. | |||
Gliese 229 A# | 18.777 | 0.58 | b | — | 0.898 | 0.10 | — | 2014 | Ab not confirmed until 2020. | |||
Gliese 752 A | 19.286 | 0.46 | b | — | 0.338 | 0.03 | — | 2018 | ||||
Gliese 754 | 19.289 | 0.18 | b | — | 0.277 | 0.03 | — | 2019 | ||||
Gliese 588# | 19.298 | 0.46 | b | — | 0.049 | 5.81 | 0.04 | — | 2019 | |||
Gliese 588# | 19.298 | 0.46 | c | — | 0.530 | 206 | 0.06 | — | 2019 | |||
82 G. Eridani# | 19.582 | 0.85 | b | — | 0.121 | — | 2011 | 2 candidates | ||||
82 G. Eridani# | 19.582 | 0.85 | c | — | 0.204 | — | 2011 | 2 candidates | ||||
82 G. Eridani# | 19.582 | 0.85 | d | — | 0.350 | — | 2011 | 2 candidates | ||||
82 G. Eridani# | 19.582 | 0.85 | e | — | 0.509 | — | 2017 | 2 candidates | ||||
Gliese 784 | 20.083 | 0.5 | b | — | 0.059 | 0.05 | — | 2019 | ||||
Gliese 555 | 20.370 | 0.29 | b | — | 0.727 | 0.04 | — | 2019 | ||||
Gliese 581# | 20.545 | 0.31 | e | — | 0.0282 | 0.0 | ~45? | 2009 | 2 disputed candidates and a disc | |||
Gliese 581# | 20.545 | 0.31 | b | — | 0.0406 | 0.0 | ~45? | 2005 | 2 disputed candidates and a disc | |||
Gliese 581# | 20.545 | 0.31 | c | — | 0.072 | 0.0 | ~45? | 2007 | 2 disputed candidates and a disc | |||
Gliese 338 B | 20.658 | 7.0 | 0.64 | b | — | 0.141 | 0.11 | — | 2020 | |||
Gliese 625 | 21.114 | 10.2 | 0.30 | b | — | 0.0784 | — | 2017 | ||||
HD 219134# | 21.306 | 0.78 | b | 1.60 | 0.0388 | 85.06 | 2015 | 1 candidate, 2 dubious planets | ||||
HD 219134# | 21.306 | 0.78 | 1.51 | 0.065 | 87.28 | 2015 | 1 candidate, 2 dubious planets | |||||
HD 219134# | 21.306 | 0.78 | 0.235 | ~87? | 2015 | 1 candidate, 2 dubious planets | ||||||
HD 219134# | 21.306 | 0.78 | — | 3.11 | ~87? | 2015 | 1 candidate, 2 dubious planets | |||||
Gliese 880 | 22.399 | 0.59 | b | — | 0.187 | 0.13 | — | 2019 | ||||
LTT 1445 A | 22.409 | 0.26 | b | 1.35 | 0.0381 | 0.16 | 89.47 | 2019 | ||||
Gliese 393 | 22.938 | 0.41 | b | — | 0.055 | 0.03 | — | 2019 | ||||
Gliese 667 C# | 23.632 | 0.33 | — | 0.049 | 0.13 | ~52? | 2009 | 5 dubious candidates | ||||
Gliese 667 C# | 23.632 | 0.33 | ↑ | 0.1251 | 0.03 | ~52? | 2011 | 5 dubious candidates | ||||
Gliese 514 | 24.851 | 0.53 | b | — | 0.097 | 15.0 | 0.05 | — | 2019 | |||
Gliese 300 | 26.469 | 0.26 | b | — | 0.050 | 0.29 | — | 2019 | ||||
Gliese 686 | 26.612 | 0.42 | b | — | 0.097 | 0.04 | — | 2019 | ||||
61 Virginis# | 27.741 | 0.95 | b | — | 0.0502 | ~77? | 2009 | a debris disc | ||||
61 Virginis# | 27.741 | 0.95 | c | — | 0.218 | 0.14 | ~77? | 2009 | a debris disc | |||
61 Virginis# | 27.741 | 0.95 | d | — | 0.476 | 0.35 | ~77? | 2009 | a debris disc | |||
CD Ceti | 28.080 | 0.161 | b | — | 0.0185 | 0 | — | 2020 | ||||
Gliese 785# | 28.699 | 0.78 | b | — | 0.32 | 0.13 | — | 2010 | ||||
Gliese 785# | 28.699 | 0.78 | c | — | 1.18 | — | 2011 | |||||
Gliese 849# | 28.711 | 0.49 | b | — | 2.26 | 0.05 | — | 2006 | ||||
Gliese 849# | 28.711 | 0.49 | c | — | 4.82 | 0.087 | — | 2006 | ||||
Gliese 433# | 29.572 | 0.48 | b | — | 0.062 | 0.04 | — | 2009 | ||||
Gliese 433# | 29.572 | 0.48 | d | — | 0.178 | 0.07 | — | 2020 | ||||
Gliese 433# | 29.572 | 0.48 | c | — | 4.82 | 0.12 | — | 2012 | ||||
Gliese 3325 | 30.109 | 0.27 | b | — | 0.071 | 0.03 | — | 2019 | ||||
HD 102365 A | 30.374 | 0.85 | b | — | 0.46 | 0.34 | — | 2010 | ||||
Gliese 357# | 30.803 | 0.34 | b | 1.17 | 0.035 | 3.93 | 0.02 | 88.92 | 2019 | |||
Gliese 357# | 30.803 | 0.34 | c | — | 0.061 | 9.13 | 0.04 | ~89? | 2019 | |||
Gliese 357# | 30.803 | 0.34 | d | — | 0.204 | 55.7 | 0.03 | ~89? | 2019 | |||
Gliese 176# | 30.879 | 0.45 | b | — | 0.066 | 0.08 | — | 2007 | 1 dubious planet | |||
Gliese 176# | 30.879 | 0.45 | c | — | 0.146 | 28.6 | 0.02 | — | 2019 | - | ||
Gliese 479 | 30.912 | 0.43 | b | — | 0.074 | 11.3 | 0.03 | — | 2019 | |||
Gliese 3512# | 30.949 | 0.123 | b | — | 0.338 | 204 | 0.44 | — | 2019 | |||
Gliese 3512# | 30.949 | 0.123 | c | — | >1.2 | >1390 | — | — | 2019 | |||
AU Microscopii | 31.719 | 0.50 | b | 4.20 | 0.066 | 0.10 | ~90 | 2020 | 1 candidate | |||
Gliese 436 | 31.820 | 0.41 | b | 4.33 | 0.0280 | 2.64 | 0.15 | 85.8 | 2004 | 1 candidate | ||
Gliese 49 | 32.145 | 0.57 | b | — | 0.106 | 17.3 | 0.03 | — | 2019 |
Excluded objects
Unlike for bodies within our Solar System, there is no clearly established method for officially recognizing an exoplanet. According to the International Astronomical Union, an exoplanet should be considered confirmed if it has not been disputed for five years after its discovery. There have been examples where the existence of exoplanets has been proposed, but even after follow-up studies their existence is still considered doubtful by some astronomers. Such cases include: Alpha Centauri, LHS 288, and Gliese 682. There are also some instances where proposed exoplanets were later disproved by subsequent studies, such as candidates around Teegarden's star, Van Maanen 2, Groombridge 1618, and VB 10.The Working Group on Extrasolar Planets of the International Astronomical Union adopted in 2003 a working definition on the upper limit for what constitutes a planet: not being massive enough to sustain thermonuclear fusion of deuterium. Some studies have calculated this to be somewhere around 13 times the mass of Jupiter, and therefore objects more massive than this are usually classified as brown dwarfs. Some proposed candidate exoplanets were later shown to be massive enough to fall above the threshold, and are likely brown dwarfs, as was the case for: SCR 1845-6357 B, SDSS J1416+1348 B, and WISE 1217+1626 B.
Excluded from the current list are known examples of potential free-floating sub-brown dwarfs, or "rogue planets", which are bodies that are too small to undergo fusion yet they do not revolve around a star. Known such examples include: WISE 0855–0714, UGPS 0722-05, WISE 1541−2250, and SIMP J01365663+0933473.
Statistics
Planetary systems
Distance | № of known star systems | № of known stars | № of stars hosting known exoplanets | Percentage of stars hosting exoplanets |
1 | 3 | 1 | 33% | |
8 | 11 | 3 | 27% | |
10–15 | 31 | 43 | 16 | 37% |
15–20 | 57 | 77 | 13 | 17% |
20–25 | 55 | 78 | 11 | 14% |
25–32.6 | ? | ~200 | 16 | ~8% |
Total | >413 | 60 | <14.5% |
Exoplanets
Orbital radius | № | Notes |
80 | Mercury orbits at 0.39 AU | |
0.4–1.0 AU | 16 | Earth orbits at 1.0 AU |
1.0–5 AU | 11 | Earth orbits at 1.0 AU |
2 | Jupiter orbits at 5.2 AU |
Orbital eccentricity | № | Notes |
15 | Earth's is 0.0167 | |
0.02–0.20 | 78 | Earth's is 0.0167 |
0.02–0.20 | 78 | Mercury's is 0.205 |
14 | Mercury's is 0.205 |