List of multiplanetary systems facts for kids
Imagine looking up at the night sky and seeing not just our Sun with its eight planets, but many other stars with their own families of planets! These are called exoplanets, and when a star has more than one, it's a multiplanetary system.
As of September 1, 2023, scientists have found planets orbiting 4,065 stars. Out of these, 878 are multiplanetary systems. This means they have at least two confirmed planets. Some even have more! Our Sun's system and Kepler-90 both have 8 confirmed planets, which is the most found so far. TRAPPIST-1 is close behind with 7 planets.
These amazing systems are listed below, starting with the ones closest to Earth. The nearest star with planets is Proxima Centauri, which has three planets. The closest system with four or more planets is Gliese 876. The farthest one we know about is OGLE-2012-BLG-0026L, which is super far away at about 13,300 light-years!
Scientists study a star's properties, like its mass and how much metal it contains (called metallicity). These things help us understand how planets form around that star. Stars with more mass and metal often have more planets, and bigger ones too. However, stars with less metal might have more planets orbiting very close to them.
Exploring Multiplanetary Systems
Color shows how many planets | |||||||
---|---|---|---|---|---|---|---|
2 (x) | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
Star |
Constellation |
Right ascension |
Declination |
Apparent magnitude |
Distance (ly) |
Spectral type |
Mass (M☉) |
Temperature (K) |
Age (Gyr) |
Confirmed (unconfirmed) planets |
Notes |
---|---|---|---|---|---|---|---|---|---|---|---|
Sun | – | - | - | −26.74 | 0.000016 | G2V | 1 | 5778 | 4.572 | 8 (1) | We think there might be a Planet Nine, but it's not confirmed yet. |
Proxima Centauri | Centaurus | 14h 29m 42.94853s | −62° 40′ 46.1631″ | 10.43 to 11.11 | 4.244 | M5.5Ve | 0.122 | 3042 | 4.85 | 2 (1) | This is the closest star to our Sun with a multiplanetary system. Planet b might be able to support life. Planet c was thought to exist, but now it's not so sure. |
Lalande 21185 | Ursa Major | 11h 03m 20.1940s | +35° 58′ 11.5682″ | 7.520 | 8.3044+0.0007−{{{2}}} | M2V | 0.39 | 3601+51−{{{2}}} | 8.047 | 2 (1) | This is the brightest red dwarf star you can see in the northern sky. |
Lacaille 9352 | Piscis Austrinus | 23h 05m 52.04s | −35° 51′ 11.05″ | 7.34 | 10.721 | M0.5V | 0.486 | 3688+86−{{{2}}} | 4.57 | 2 (1) | The unconfirmed planet d might be able to support life. |
Luyten's Star | Canis Minor | 07h 27m 24.4991s | 05° 13′ 32.827″ | 9.872 | 11.20 | M3.5V | 0.26 | 3150 | unknown | 2 (2) | This star is likely older than 8 billion years. Planet b might be able to support life. |
YZ Ceti | Cetus | 01h 12m 30.64s | −16° 59′ 56.3″ | 12.07 | 11.74 | M4.5V | 0.13 | 3056 | 4 | 3 (1) | This is a flare star, meaning it can suddenly get much brighter. |
Gliese 1061 | Horologium | 03h 35m 59.69s | -44° 30′ 45.3″ | 13.03 | 12.04 | M5.5V | 0.113 | 2953 | unknown | 3 | Planets c and d might be able to support life. |
Teegarden's Star | Aries | 02h 53m 00.89s | +16° 52′ 53″ | 15.13 | 12.497 | M7V | 0.097 | 3034 | 8 | 3 | Teegarden's Star b and c are likely Earth-sized planets. They orbit in the star's habitable zone. |
Wolf 1061 | Ophiuchus | 16h 30m 18.0584s | -12° 39′ 45.325″ | 10.07 | 14.050 ± 0.002 | M3.5V | 0.294 | 3342 | unknown | 3 | Planet c might be able to support life. |
Gliese 876 | Aquarius | 22h 53m 16.73s | −14° 15′ 49.3″ | 10.17 | 15.25 | M4V | 0.334 | 3348 | 4.893 | 4 | Planet b is a giant gas planet. It orbits in the habitable zone. |
82 G. Eridani | Eridanus | 03h 19m 55.65s | −43° 04′ 11.2″ | 4.254 | 19.71 | G8V | 0.7 | 5401 | 5.76 | 3 (3) | This star also has a disk of dust around it. |
Gliese 581 | Libra | 15h 19m 26.83s | −07° 43′ 20.2″ | 10.56 | 20.56 | M3V | 0.311 | 3484 | 4.326 | 3 (2) | The unconfirmed planets d and g might be able to support life. |
Gliese 667 C | Scorpius | 17h 18m 57.16s | −34° 59′ 23.14″ | 10.20 | 21 | M1.5V | 0.31 | 3700 | 2 | 2 (1) | This is part of a triple star system. All exoplanets orbit around Star C. Planet c might be able to support life. |
HD 219134 | Cassiopeia | 23h 13m 14.74s | 57° 10′ 03.5″ | 5.57 | 21 | K3Vvar | 0.794 | 4699 | 12.66 | 6 | This is the closest star with six exoplanets. It's also the closest K-type star with many planets. It's one of the oldest stars with a multiplanetary system. |
61 Virginis | Virgo | 13h 18m 24.31s | −18° 18′ 40.3″ | 4.74 | 28 | G5V | 0.954 | 5531 | 8.96 | 2 (1) | Planet d is not confirmed and might not be real. This star also has a disk of debris around it. |
Gliese 433 | Hydra | 11h 35m 26.9485s | -25° 10′ 08.9″ | 9.79 | 29.8±0.1 | M1.5V | 0.48 | 3550±100 | unknown | 3 | There might be a disk of material around this star. |
Gliese 357 | Hydra | 09h 36m 01.6373s | -21° 39′ 38.878″ | 10.906 | 30.776 | M2.5V | 0.362 | 3488 | unknown | 3 | Planet d is a Super-Earth that might be able to support life. |
L 98-59 | Volans | 08h 18m 07.62s | -68° 18′ 46.8″ | 11.69 | 34.6 | M3V | 0.312 | 3412 | unknown | 4 (1) | The unconfirmed planet f orbits in the habitable zone. |
Gliese 414 A | Ursa Major | 11h 11m 05.88s | 30° 26′ 42.61″ | 8.31 | 38.76 | K7V | 0.65 | 4120 | 12.4 | 2 (0) | |
Gliese 806 | Cygnus | 20h 45m 04.099s | +44° 29′ 56.6″ | 10.79 | 39.3 | M1.5V | 0.423 | 3586 | 3 | 2 (1) | - |
TRAPPIST-1 | Aquarius | 23h 06m 29.283s | -05° 02′ 28.59″ | 18.80 | 39.5 | M8V | 0.089 | 2550 | 7.6 | 7 | Planets d, e, f and g might be able to support life. This is the only star known with exactly seven confirmed planets. All seven rocky planets are very close to the star. |
55 Cancri | Cancer | 08h 52m 35.81s | +28° 19′ 50.9″ | 5.95 | 40 | K0IV-V | 1.026 | 5217 | 7.4 | 5 | All five known planets orbit around star A. This is the closest system with exactly five confirmed planets. |
Gliese 180 | Eridanus | 04h 53m 49.9798s | -17° 46′ 24.294″ | 10.894 | 40.3 | M2V or M3V | 0.39 | 3562 | unknown | 3 | Whether planets b and c can support life is still debated. |
HD 69830 | Puppis | 08h 18m 23.95s | −12° 37′ 55.8″ | 5.95 | 41 | K0V | 0.856 | 5385 | 7.446 | 3 | A disk of debris was found outside the three exoplanets in 2005. |
HD 40307 | Pictor | 05h 54m 04.24s | −60° 01′ 24.5″ | 7.17 | 42 | K2.5V | 0.752 | 4977 | 1.198 | 4 (2) | The existence of planets e and g is debated. If confirmed, planet g might be able to support life. |
Upsilon Andromedae | Andromeda | 01h 36m 47.84s | +41° 24′ 19.7″ | 4.09 | 44 | F8V | 1.27 | 6107 | 3.781 | 3 (1) | This is the closest F-type star with a multiplanetary system. It's the second brightest star with multiple planets in the night sky. All exoplanets orbit around star A in this binary system. |
47 Ursae Majoris | Ursa Major | 10h 59m 27.97s | +40° 25′ 48.9″ | 5.10 | 46 | G0V | 1.029 | 5892 | 7.434 | 3 | Planet b was found in 1996. It was one of the first exoplanets discovered. It was also the first long-period exoplanet found. |
Nu2 Lupi | Lupus | 15h 21m 49.57s | −48° 19′ 01.1″ | 5.65 | 47 | G2V | 0.906 | 5664 | 10.36 | 3 | This is one of the oldest stars near our solar system. |
LHS 1140 | Cetus | 00h 44m 59.31s | -15° 16′ 16.7″ | 14.18 | 48.9 | M4.5V | 0.179 | 3216+39−{{{2}}} | 5 | 2 (1) | Planet b is a Super-Earth that might be able to support life. |
Gliese 163 | Dorado | 04h 09m 16s | −53° 22′ 25″ | 11.8 | 49 | M3.5V | 0.4 | unknown | 3 | 5 | Planet c is possibly a Super-Earth that could support life, but it might be too hot or too big. |
Mu Arae | Ara | 17h 44m 08.70s | −51° 50′ 02.6″ | 5.15 | 51 | G3IV-V | 1.077 | 5704 | 6.413 | 4 | Planet b orbits in the habitable zone. It's a gas giant, so it can't support life itself. But a large moon orbiting it might be able to. |
GJ 3929 | Corona Borealis | 15h 58m 18.8s | 35° 24′ 24.3″ | 12.67 | 51.58 | M3.5V | 0.313 | 3384 | unknown | 2 (0) | |
Gliese 676 A | Ara | 17h 30m 11.2042s | -51° 38′ 13.116″ | 9.59 | 53 | M0V | 0.71 | unknown | unknown | 4 | This system once held the record for the biggest range of planet sizes in 2012. |
HD 7924 | Cassiopeia | 01h 21m 59.12s | +76° 42′ 37.0″ | 7.19 | 55 | K0V | 0.832 | 5177 | unknown | 3 | These planets might be Super-Earths that could support life. |
Pi Mensae | Mensa | 05h 37m 09.8851s | −80° 28′ 08.8313″ | 5.65 | 59.62+0.07−{{{2}}} | G0V | 1.11 | 6013 | 3.4 | 3 | The outermost planet is probably a brown dwarf. |
Gliese 3293 | Eridanus | 04h 28m 35.72s | -25° 10′ 08.9″ | 11.96 | 59 | M2.5V | 0.42 | 3466±49 | unknown | 4 | Planets b and d orbit in the habitable zone. |
LHS 1678 | Caelum | 04h 32m 43s | -39° 47′ 21″ | 12 | 64.8 | M2V | 0.345 | 3490 | unknown | 3 (0) | |
HD 142 | Phoenix | 00h 06m 19.0s | -49° 04′ 30″ | 5.70 | 67 | G1 IV | 1.1 | 6180 | 5.93 | 3 | - |
HD 215152 | Aquarius | 22h 43m 21s | -06° 24′ 03″ | 8.13 | 70 | G8IV | 1.019 | 5646 | 7.32 | 4 | This star might have a disk of debris around it. |
HD 164922 | Hercules | 18h 02m 30.86s | +26° 18′ 46.8″ | 7.01 | 72 | G9V | 0.874 | 5293 | 13.4 | 4 | This is the oldest star with a multiplanetary system. Even though it's old, it has more metals than the Sun. |
HD 63433 | Gemini | 07h 49m 55.0s | +27° 21′ 47.4″ | 6.92 | 73 | G5V | 0.99 | 5640 | 0.4 | 3 | |
HIP 57274 | Ursa Major | 11h 44m 41s | +30° 57′ 33″ | 8.96 | 85 | K5V | 0.73 | 4640 | 7.87 | 3 | - |
HD 39194 | Mensa | 05h 44m 32s | -70° 08′ 37″ | 8.08 | 86.2 | K0V | unknown | 5205 | unknown | 3 | The planets have unusual, stretched-out orbits. |
LP 791-18 | Crater | 11h 02m 45.95s | -16° 24′ 22.3″ | 16.9 | 86.9 | M6V/M7V | 0.139 | 2960 | 0.5 | 3 | |
HD 181433 | Pavo | 19h 25m 09.57s | −66° 28′ 07.7″ | 8.38 | 87 | K5V | 0.777 | 4962 | 8.974 | 3 | - |
HD 134606 | Apus | 15h 15m 15s | -70° 31′ 11″ | 6.85 | 87 | G6IV | unknown | unknown | unknown | 5 | The planets have moderately stretched-out orbits. |
HD 158259 | Draco | 17h 25m 24.0s | +52° 47′ 26″ | 6.46 | 89 | G0 | 1.08 | unknown | unknown | 5 (1) | This is a G-type star, a bit bigger than the Sun. Planet g is not yet confirmed. |
HD 82943 | Hydra | 09h 34m 50.74s | −12° 07′ 46.4″ | 6.54 | 90 | F9V Fe+0.5 | 1.175 | 5874 | 3.08 | 3 | Planets b and c orbit in a special way, with one taking twice as long as the other. Planet b is in the habitable zone, but it and planet c are big enough to be brown dwarfs. |
Gliese 3138 | Cetus | 02h 09m 10.90s | -16° 20′ 22.53″ | 10.877 | 92.9 | 0.681 | 3717+49−{{{2}}} | unknown | 3 | ||
GJ 9827 | Pisces | 23h 27m 04.84s | −01° 17′ 10.59″ | 10.10 | 96.8+0.2−{{{2}}} | K6V | 0.593 | 4294+52−{{{2}}} | unknown | 3 | Also known as K2-135. Planet b is super dense, with at least half of it being iron. |
K2-239 | Sextans | 10h 42m 22.63s | +04° 26′ 28.86″ | 14.5 | 101.5 | M3V | 0.4 | 3420 | unknown | 3 | |
TOI-700 | Dorado | 06h 28m 22.97s | −65° 34′ 43.01″ | 13.10 | 101.61 | M2V | 0.416 | 3480 | 1.5 | 4 | Planets d and e might be able to support life. |
HD 17926 | Fornax | 02h 51m 56.16s | −30° 48′ 53.2″ | 6.38 | 105 | F6V | 1.145 | 6201 | unknown | 3 | This star has a smaller red dwarf companion. |
HD 37124 | Taurus | 05h 37m 02.49s | +20° 43′ 50.8″ | 7.68 | 110 | G4V | 0.83 | 5606 | 3.327 | 3 | Planet c orbits at the very edge of the habitable zone. |
HD 20781 | Fornax | 03h 20m 03s | -28° 47′ 02″ | 8.44 | 115 | G9.5V | 0.7 | 5256±29 | unknown | 4 | It's part of a binary star system. |
Kepler-444 | Lyra | 19h 19m 01s | 41° 38′ 05″ | 9.0 | 117 | K0V | 0.758 | 5040 | 11.23 | 5 | This is the closest multiplanetary system where the planets were found by the Kepler space telescope. |
HD 141399 | Boötes | 15h 46m 54.0s | +46° 59′ 11″ | 7.2 | 118 | K0V | 1.07 | 5600 | unknown | 4 | Planet c orbits in the habitable zone. |
Kepler-42 | Cygnus | 19h 28m 53s | +44° 37′ 10″ | 16.12 | 126 | M5V | 0.13 | 3068 | unknown | 3 | - |
HD 31527 | Lepus | 04h 55m 38s | -23° 14′ 31″ | 7.48 | 126 | G0V | unknown | unknown | unknown | 3 | - |
HD 10180 | Hydrus | 01h 37m 53.58s | −60° 30′ 41.5″ | 7.33 | 127 | G1V | 1.055 | 5911 | 4.335 | 6 (3) | This system has three unconfirmed planets. If they are confirmed, HD 10180 would have the most planets of any star! |
HD 23472 | Reticulum | 03h 41m 50.3988s | -62° 46′ 01.4772″ | 9.72 | 127.48 | K3.5V | 0.67 | 4684+99−{{{2}}} | unknown | 5 | |
HR 8799 | Pegasus | 23h 07m 28.72s | +21° 08′ 03.3″ | 5.96 | 129 | A5V | 1.472 | 7429 | 0.064 | 4 | This is the only A-type main sequence star with a multiplanetary system. It's also the hottest and biggest single main sequence star with multiple planets. All four planets are huge super-Jupiters. |
HD 27894 | Reticulum | 04h 20m 47.05s | −59° 24′ 39.0″ | 9.42 | 138 | K2V | 0.8 | 4875 | 3.9 | 3 | - |
HD 93385 | Vela | 10h 46m 15.1160s | -41° 27′ 51.7261″ | 7.486 | 141.6 | G2V | 1.07 | 5823 | 4.13 | 3 | |
K2-3 | Leo | 11h 29m 20.3918s | -01° 27′ 17.280″ | 12.168 | 143.9+0.4−{{{2}}} | M0V | 0.601 | 3835±70 | 1 | 3 | The planet farthest from the star orbits in the habitable zone. |
HD 34445 | Orion | 05h 17m 41.0s | +07° 21′ 12″ | 7.31 | 152 | G0V | 1.07 | 5836 | 8.5 | 1 (5) | Some planets were not found again in a later study, or were thought to be false alarms. |
HD 204313 | Capricornus | 21h 28m 12.21s | –21° 43′ 34.5″ | 7.99 | 154 | G5V | 1.045 | 5767 | 3.38 | 3 | - |
HD 3167 | Pisces | 00h 34m 57.5s | +04° 22′ 53″ | 8.97 | 154.4 | K0V | 0.852 | 5300 | 10.2 | 4 | - |
HIP 34269 | Puppis | 07h 06m 13.98s | -47° 35′ 13.87″ | 10.59 | 154.81 | 0.74 | 4440+100−{{{2}}} | unknown | 4 | ||
HD 133131 | Libra | 15h 03m 35.80651s | -27° 50′ 27.5520″ | 8.4 | 168 | G2V+G2V | 0.95 | 5799±19 | 6 | 3 | This is a binary star system. 2 planets orbit the main star, and 1 planet orbits the second star. |
K2-136 | Taurus | 04h 29m 38.99s | +22° 52′ 57.80″ | 11.2 | 173 | K5V | 0.71 | 4364+70−{{{2}}} | 0.7 | 3 | |
HIP 14810 | Aries | 03h 11m 14.23s | +21° 05′ 50.5″ | 8.51 | 174 | G5V | 0.989 | 5485 | 5.271 | 3 | - |
HD 191939 | Draco | 20h 08m 05.75s | +66° 51′ 2.1″ | 8.971 | 175 | G9V | 0.81 | 5348 | 8.7 | 6 | |
HD 125612 | Virgo | 14h 20m 53.51s | −17° 28′ 53.5″ | 8.33 | 177 | G3V | 1.099 | 5897 | 2.15 | 3 | - |
HD 184010 | Vulpecula | 19h 31m 22.0s | +26° 37′ 02″ | 5.9 | 200 | KOIII-IV | 1.35 | 4971 | 2.76 | 3 | - |
HD 109271 | Virgo | 12h 33m 36.0s | -11° 37′ 19″ | 8.05 | 202 | G5 | 1.047 | 5783 | 7.3 | 2 (1) | - |
HD 38677 | Orion | 05h 47m 06.0s | −10° 37′ 49″″ | 8.0 | 202 | F8V | 1.21 | 6196.0 | 2.01 | 4 | - |
TOI-178 | Sculptor | 00h 29m 12.30s | 30° 27′ 13.46″ | 11.95 | 205.16 | K7V | 0.65 | 4316+70−{{{2}}} | 7.1 | 6 | The planets in this system orbit in a special pattern called orbital resonance. |
HD 108236 | Centaurus | 12h 26m 17.89s | -51° 21′ 46.21″ | 9.24 | 211 | G3V | 0.97 | 5730 | 5.8 | 5 | - |
Kepler-37 | Lyra | 18h 58m 23.1s | 44° 31′ 05″ | 9.77 | 215 | G8V | 0.803 | 5417 | 6 | 3 (1) | The existence of Kepler-37e is uncertain. |
K2-72 | Aquarius | 22h 18m 29.2548s | -09° 36′ 44.3824″ | 15.04 | 217 | M2V | 0.27 | 3497 | unknown | 4 | Two planets are in the habitable zone. |
Kepler-138 | Lyra | 19h 21m 32.0s | +43° 17′ 35″ | 13.5 | 218.5 | M1V | 0.57 | 3871 | unknown | 3 (1) | |
K2-233 | Libra | 15h 21m 55.2s | -20° 13′ 54″ | 10.0 | 221 | K3 | 0.8 | 4950 | 0.36 | 3 | |
TOI-1260 | Ursa Major | 10h 28m 35.03s | +65° 51′ 16.38″ | 11.973 | 239.5 | 0.66 | 4227+85−{{{2}}} | 6.7 | 3 | ||
LP 358-499 | Taurus | 04h 40m 35.64s | +25° 00′ 36.05″ | 13.996 | 245.3 | 0.46 | 3655+80−{{{2}}} | unknown | 4 | Also known as K2-133. | |
K2-266 | Sextans | 10h 31m 44.5s | +00° 56′ 15″ | 252 | K | 0.69 | 4285 | 8.4 | 4 (2) | ||
K2-155 | Taurus | 04h 21m 52.5s | +21° 21′ 13″ | 12.8 | 267 | K7 | 0.65 | 4258 | unknown | 3 | |
K2-384 | Cetus | 01h 21m 59.86s | 00° 45′ 04.41″ | 16.12 | 270 | M?V | 0.33 | 3623+138−{{{2}}} | unknown | 5 | |
TOI-1136 | Draco | 12h 48m 44.38 s | +64° 51′ 18.99″ | 9.534 | 275.8 | 1.022 | 5770+50−{{{2}}} | 0.7 | 6 | ||
TOI-561 | Sextans | 09h 52m 44.44s | +06° 12′ 57.97″ | 10.252 | 279 | G9V | 0.785 | 5455 | 5 | 4 | - |
Kepler-445 | Cygnus | 19h 54m 57.0s | +46° 29′ 55″ | 18 | 294 | 0.18 | 3157 | unknown | 3 | - | |
TOI-763 | Centaurus | 12h 57m 52.45s | −39° 45′ 27.71″ | 10.156 | 311 | 0.917 | 5444 | 6.2 | 2 (1) | - | |
K2-229 | Virgo | 12h 27m 29.5848s | −06° 43′ 18.7660″ | 10.985 | 335 | K2V | 0.837 | 5185 | 5.4 | 3 | |
Kepler-102 | Lyra | 18h 45m 55.9s | +47° 12′ 29″ | 11.492 | 340 | K3V | 0.81 | 4809 | 1.41 | 5 | |
V1298 Tauri | Taurus | 04h 05m 19.5912s | +20° 09′ 25.5635″ | 10.31 | 354 | K0-1.5 | 1.101 | 4970 | 0.023 | 4 | This star is a young, variable star called a T Tauri variable. |
K2-302 | Aquarius | 22h 20m 22.7764s | -09° 30′ 34.2934″ | 11.98 | 359.3 | unknown | 3297+73−{{{2}}} | unknown | 3 | ||
K2-198 | Virgo | 13h 15m 22.5s | -06° 27′ 54″ | 11.0 | 362 | 0.8 | 5213 | unknown | 3 | ||
TOI-125 | Hydrus | 01h 34m 22.73s | -66° 40′ 32.95″ | 11.02 | 363 | 0.859 | 5320 | unknown | 3 (2) | ||
HIP 41378 | Cancer | 08h 26m 28.0s | +10° 04′ 49″ | 8.9 | 378 | F8 | 1.15 | 6199 | unknown | 5 (2) | Planet f is unusually light. It might have rings or a very large atmosphere. More planets are still thought to exist. |
Kepler-446 | Lyra | 18h 49m 00.0s | +44° 55′ 16″ | 16.5 | 391 | M4V | 0.22 | 3359 | unknown | 3 | - |
HD 33142 | Lepus | 05h 07m 35.54s | -13° 59′ 11.34″ | 7.96 | 394.3 | 1.52 | 5025+24−16 | unknown | 3 | The main star is a giant star of spectral type K0III. | |
K2-148 | Cetus | 00h 58m 04.28s | -00° 11′ 35.36″ | 13.05 | 407 | K7V | 0.65 | 4079+70−{{{2}}} | unknown | 3 | A second, smaller red dwarf star is also part of this system. |
Kepler-68 | Cygnus | 19h 24m 07.76s | +49° 02′ 25.0″ | 8.588 | 440 | G1V | 1.079 | 5793 | 6.3 | 3 (1) | Planet d, the outermost confirmed planet, is a Jupiter-sized planet. It orbits in the habitable zone. There might be a fourth planet or another star in the system. |
HD 28109 | Hydrus | 04h 20m 57.13s | -68° 06′ 09.51″ | 9.38 | 457 | 1.26 | 6120+50−{{{2}}} | unknown | 3 | ||
COROT-7 | Monoceros | 06h 43m 49.47s | −01° 03′ 46.9″ | 11.73 | 489 | K0V | 0.93 | 5275 | 1.5 | 3 | |
XO-2 | Lynx | 07h 48m 07.4814s | +50° 13′ 03.2578″ | 11.18 | 496±3 | K0V+K0V | unknown | unknown | 6.3 | 4 | This is a binary star system. Each star has two planets orbiting it. |
Kepler-411 | Cygnus | 19h 10m 25.3s | +49° 31′ 24″ | 12.5 | 499.4 | K3V | 0.83 | 4974 | unknown | 5 | |
K2-381 | Sagittarius | 19h 12m 06.46s | -21° 00′ 27.51″ | 13.01 | 505 | K2 | 0.754 | 4473+138−{{{2}}} | unknown | 3 | |
K2-285 | Pisces | 23h 17m 32.2s | +01° 18′ 01″ | 12.03 | 508 | K2V | 0.83 | 4975 | unknown | 4 | |
K2-32 | Ophiuchus | 16h 49m 42.2602s | −19° 32′ 34.151″ | 12.31 | 510 | G9V | 0.856 | 5275 | 7.9 | 5 | The planets likely orbit in a special pattern called a 1:2:5:7 orbital resonance. |
TOI-1246 | Draco | 16h 44m 27.96s | 70° 25′ 46.70″ | 11.6 | 558 | 1.12 | 5217+50−{{{2}}} | unknown | 4 | ||
K2-352 | Cancer | 09h 21m 46.8434s | +18° 28′ 10.34710″ | 11.12 | 577 | G2V | 0.98 | 5791 | unknown | 3 | |
Kepler-398 | Lyra | 19h 25m 52.5s | +40° 20′ 38″ | 578 | K5V | 0.72 | 4493 | unknown | 3 | ||
Kepler-186 | Cygnus | 19h 54m 36.6s | +43° 57′ 18″ | 15.29 | 579.23 | M1V | 0.478 | 3788 | unknown | 5 | Planet f was the first Earth-sized exoplanet found that orbits in the habitable zone. |
K2-37 | Scorpius | 16h 13m 48.2445s | -24° 47′ 13.4279″ | 12.52 | 590 | G3V | 0.9 | 5413 | unknown | 3 | |
K2-58 | Aquarius | 22h 15m 17.2364s | -14° 02′ 59.3151″ | 12.13 | 596 | K2V | 0.89 | 5038 | unknown | 3 | |
K2-138 | Aquarius | 23h 15m 47.77s | -10° 50′ 58.91″ | 12.21 | 597+55−{{{2}}} | K1V | 0.93 | 5378±60 | 2.3 | 6 | Planet g was not fully confirmed. It might even be two long-period planets instead. |
K2-38 | Scorpius | 16h 00m 08.06s | -23° 11′ 21.33″ | 11.34 | 630 | G3V | 1.03 | 5731+66−{{{2}}} | unknown | 2 (1) | There is a dust disk in this system. |
WASP-47 | Aquarius | 22h 04m 49.0s | -12° 01′ 08″ | 11.9 | 652 | G9V | 1.084 | 5400 | unknown | 4 | One planet is a gas giant that orbits in the habitable zone. WASP-47 is the only system known to have planets very close to the star and another planet much farther away. |
K2-368 | Aquarius | 22h 10m 32.58s | -11° 09′ 58.02″ | 13.54 | 674 | K3 | 0.746 | 4663+138−{{{2}}} | unknown | 3 (1) | |
HAT-P-13 | Ursa Major | 08h 39m 31.81s | +47° 21′ 07.3″ | 10.62 | 698 | G4 | 1.22 | 5638 | 5 | 2 (1) | - |
Kepler-19 | Cygnus | 19h 21m 41s | +37° 51′ 06″ | 15.178 | 717 | G | 0.936 | 5541 | 1.9 | 3 | This system has a Super-Earth with a thick atmosphere and two Neptune-sized planets. |
Kepler-296 | Lyra | 19h 06m 09.6s | +49° 26′ 14.4″ | 12.6 | 737.113 | K7V + M1V | unknown | 4249 | unknown | 5 | All planets orbit around the main star. Planets e and f might be able to support life. |
Kepler-454 | Lyra | 19h 09m 55.0s | +38° 13′ 44″ | 11.57 | 753 | G | 1.028 | 5687 | 5.25 | 3 | |
Kepler-25 | Lyra | 19h 06m 33.0s | +39° 29′ 16″ | 11 | 799 | F | 1.22 | 6190 | unknown | 3 | Two planets were found by how they affected the star's timing. The third was found by measuring the star's wobble. |
Kepler-114 | Cygnus | 19h 36m 29.0s | +48° 20′ 58″ | 13.7 | 846 | K | 0.71 | 4450 | unknown | 3 | |
Kepler-54 | Cygnus | 19h 39m 06.0s | +43° 03′ 23″ | 16.3 | 886 | M | 0.52 | 3705 | unknown | 3 | |
Kepler-20 | Lyra | 19h 10m 47.524s | 42° 20′ 19.30″ | 12.51 | 950 | G8V | 0.912 | 5466 | 8.8 | 6 | Planets e and f were the first Earth-sized planets ever discovered. |
K2-19 | Virgo | 11h 39m 50.4804s | +00° 36′ 12.8773″ | 13.002 | 976 | K0V or G9V | 0.918 | 5250±70 | 8 | 3 | - |
PSR B1257+12 | Virgo | 13h 00m 03.58s | +12° 40′ 56.5″ | 24.31 | 980 | pulsar | 1.444 | 28856 | 0.797 | 3 | This is the only pulsar star with a multiplanetary system. It was the first time exoplanets and a multiplanetary system were confirmed! It's also the dimmest star with a multiplanetary system that we can see. |
Kepler-62 | Lyra | 18h 52m 51.060s | +45° 20′ 59.507″ | 13.75 | 990 | K2V | 0.69 | 4925 | 7 | 5 | Planets e and f orbit in the habitable zone. |
Kepler-48 | Cygnus | 19h 56m 33.41s | +40° 56′ 56.47″ | 13.04 | 1000 | K | 0.88 | 5190 | unknown | 5 | |
Kepler-100 | Lyra | 19h 25m 32.6s | +41° 59′ 24″ | 1011 | G1IV | 1.109 | 5825 | 6.5 | 4 | ||
Kepler-49 | Cygnus | 19h 29m 11.0s | +40° 35′ 30″ | 15.5 | 1015 | K | 0.55 | 3974 | unknown | 4 | |
Kepler-65 | Lyra | 19h 14m 45.3s | +41° 09′ 04.2″ | 11.018 | 1019 | F6IV | 1.199 | 6211 | unknown | 4 | - |
Kepler-52 | Draco | 19h 06m 57.0s | +49° 58′ 33″ | 15.5 | 1049 | K | 0.58 | 4075 | unknown | 3 | |
K2-314 | Libra | 15h 13m 00.0s | -16° 43′ 29″ | 11.4 | 1059 | G8IV/V | 1.05 | 5430 | 9 | 3 | |
K2-219 | Pisces | 00h 51m 22.9s | +08° 52′ 04″ | 12.09 | 1071 | G2 | 1.02 | 5753+50−{{{2}}} | unknown | 3 | |
K2-268 | Cancer | 08h 54m 50.2862s | +11° 50′ 53.7745″ | 13.85 | 1079 | unknown | unknown | unknown | 5 | ||
K2-183 | Cancer | 08h 20m 01.7184s | 14° 01′ 10.0711″ | 12.85 | 1083 | unknown | 5482+50−{{{2}}} | unknown | 3 | ||
K2-187 | Cancer | 08h 50m 05.6682s | 23° 11′ 33.3712″ | 12.864 | 1090 | G?V | 0.967 | 5438+63−{{{2}}} | unknown | 4 | |
Kepler-1542 | Lyra | 19h 02m 54.8s | +42° 39′ 16″ | 1096 | G5V | 0.94 | 5564 | unknown | 4 | - | |
Kepler-26 | Lyra | 18h 59m 46s | +46° 34′ 00″ | 16 | 1100 | M0V | 0.65 | 4500 | unknown | 4 | These are low-density planets, smaller than Neptune. |
Kepler-167 | Cygnus | 19h 30m 38.0s | +38° 20′ 43″ | 1119 ± 6 | 0.76 | 4796 | unknown | 4 | |||
Kepler-81 | Cygnus | 19h 34m 32.9s | +42° 49′ 30″ | 15.56 | 1136 | K?V | 0.648 | 4391 | unknown | 3 | |
Kepler-132 | Lyra | 18h 52m 56.6s | +41° 20′ 35″ | 1140 | F9 | 0.98 | 6003 | unknown | 4 | ||
Kepler-80 | Cygnus | 19h 44m 27.0s | +39° 58′ 44″ | 14.804 | 1218 | M0V | 0.73 | 4250 | unknown | 6 | This is a red dwarf star with six confirmed planets. Five of them orbit in a special pattern called an orbital resonance. |
Kepler-159 | Cygnus | 19h 48m 16.8s | +40° 52′ 08″ | 1219 | K | 0.63 | 4625 | unknown | 2 (1) | This star has very little metal. | |
K2-299 | Aquarius | 22h 05m 06.5342s | -14° 07′ 18.0135″ | 13.12 | 1220 | unknown | 5724+72−{{{2}}} | unknown | 3 | ||
Kepler-88 | Lyra | 19h 24m 35.5431s | +40° 40′ 09.8098″ | 13.5 | 1243 | G8IV | 1.022 | 5513+67−{{{2}}} | 2.45 | 3 | |
Kepler-174 | Lyra | 19h 09m 45.4s | +43° 49:56′ | 1269 | K | unknown | 4880 | unknown | 3 | Planet d might orbit in the habitable zone. | |
Kepler-32 | Cygnus | 19h 51m 22.0s | +46° 34′ 27″ | 16 | 1301.1 | M1V | 0.58 | 3900 | unknown | 3 (2) | - |
Kepler-83 | Lyra | 18h 48m 55.8s | +43° 39′ 56″ | 16.51 | 1306 | K7V | 0.664 | 4164 | unknown | 3 | |
TOI-1338 | Pictor | 06h 08m 31.97s | +59° 32′ 28.1″ | 11.72 | 1318 | F8 M |
1.127 | 6160 | 4.4 | 2 (0) | |
Kepler-271 | Lyra | 18h 52m 00.7s | +44° 17′ 03″ | 1319 | G7V | 0.9 | 5524 | unknown | 3 | This star has very little metal. | |
Kepler-169 | 19h 03m 60.0s | +40° 55:10′ | 12.186 | 1326 | K2V | 0.86 | 4997 | unknown | 5 | ||
Kepler-451 | Cygnus | 19h 38m 32.61s | 46° 03′ 59.1″ | 1340 | sdB M |
0.6 | 29564 | 6 | 3 | Three planets orbit around the two stars of the Kepler-451 binary pair. | |
Kepler-304 | Cygnus | 19h 37m 46.0s | +40° 33′ 27″ | 1418 | K | 0.8 | 4731 | unknown | 4 | ||
Kepler-18 | Cygnus | 19h 52m 19.06s | +44° 44′ 46.76″ | 13.549 | 1430 | G7V | 0.97 | 5345 | 10 | 3 | |
Kepler-106 | Cygnus | 20h 03m 27.4s | +44° 20′ 15″ | 12.882 | 1449 | G1V | 1 | 5858 | 4.83 | 4 | |
Kepler-92 | Lyra | 19h 16m 21.0s | +41° 33′ 47″ | 11.6 | 1463 | G1IV | 1.209 | 5871 | 5.52 | 3 | |
Kepler-450 | Cygnus | 19h 41m 56.8s | +51° 00′ 49″ | 11.684 | 1487 | F | 1.19 | 6152 | unknown | 3 |
Stars with Planets and Brown Dwarfs
These stars have both planets and objects called brown dwarfs orbiting them. Brown dwarfs are bigger than planets but smaller than stars.
- 54 Piscium (HD 3651)
- HD 168443
- Gliese 229 A
- Epsilon Indi A
- HD 82943
- Pi Mensae
- HD 38529
- HD 245134
See also
In Spanish: Anexo:Sistemas planetarios para niños
- Lists of exoplanets
- Methods of detecting exoplanets
- List of exoplanet firsts
- List of exoplanet extremes
- List of brown dwarfs
- Lists of stars
- List of nearest stars and brown dwarfs
- List of stars with proplyds
- Lists of astronomical objects
For links to specific lists of exoplanets see:
- List of exoplanets detected by microlensing
- List of exoplanets detected by radial velocity
- List of exoplanets detected by timing
- List of directly imaged exoplanets
- List of transiting exoplanets
- List of nearest terrestrial exoplanet candidates
Online archives:
- NASA Exoplanet Archive