Possible Habitable Planets
Last Updated: 09/05/2012
95% Confirmed Habitable Exoplanets
Out of the thousands of possible habitable planets in the universe these 6 are 95% confirmed as being in the goldilocks zone, or more accurately the circumstellar habitable zone or (CHZ), the sweet spot where the planet is not too close and not too far away from its sun so the temperature is "just right" or another words not so cold that nothing could ever grow and evolve and not so hot where the rock and metals themselves melt and the water evaporates.
Planets here will be listed in order of light years away from Earth. We will continue to add more planets as they are confirmed so bookmark us and come back often.
Gliese 581 g
Quick Facts:
Distance away in light Years: 20.2
Date discovered: September 2010
Earth similarity index: 0.92
Orbital period: 37 days
Average temperature: -35 to 10 °F (-37 to -12 °C)
Star name: Gliese 581
constellation: Libra
Mass: 2.6 * Earths mass
Gliese 581 d
Quick Facts:
Distance away in light Years: 20.2
Date discovered: 2007
Earth similarity index: 0.74
Orbital period: 67 days
Average temperature: (Temperature does not include atmosphere) -34.6 F (-37 C)
Star name: Gliese 581
constellation: Libra
Mass: 6.9 * Earths mass
Gliese 667C c
Quick Facts:
Distance away in light Years: 23.6
Date discovered: 2011
Earth similarity index: 0.85
Orbital period: 28
Average temperature: (Temperature does not include atmosphere) 80.6 f (27 C)
Star name: Gliese 667 C
constellation: Scorpius
Mass: 4.9 * Earths mass
HD 85512 b
Quick Facts:
Distance away in light Years: 36.3
Date discovered: August 17, 2011
Earth similarity index: 0.79
Orbital period: 58
Average temperature: (Temperature does not include atmosphere) 75 F (25 C)
Star name: Gliese 370
constellation: Vela
Mass: 4.0 * Earths mass
Gliese 163 c
Quick Facts:
Distance away in light Years: 48.9
Date discovered: 2012
Earth similarity index: 0.73
Orbital period: 26
Average temperature: (Temperature does not include atmosphere) 60 C
Star name: Gliese 163
constellation: Dorado
Mass: 8.0 * Earths mass
Kepler-22 b
Quick Facts:
Distance away in light Years: 535.9
Date discovered: December 2011
Earth similarity index: 0.81
Orbital period: 290
Average temperature: (Temperature does not include atmosphere) 88 F (31 C)
Star name: Kepler-22
constellation: Cygnus
Mass: 6.0 * Earths mass
Possible Habitable Planets That Need Confirmation
| Planet Name |
HZA |
Distance in LY |
Star Name |
ESI |
| Gliese 581 g |
-0.01 |
20.2 |
Gliese |
0.92 |
| Gliese 581 d |
+0.81 |
20.2 |
Gliese |
0.74 |
| Gliese 667C c |
+0.24 |
23.6 |
Gliese |
0.85 |
| HD 85512 b |
-0.01 |
36.3 |
Gliese 370 |
0.77 |
| KOI-268.01 |
-0.04 |
217.1 |
KOI-268 |
0.81 |
| KOI-463.01 |
-0.05 |
535.8 |
KOI-463 |
0.85 |
| Kepler-22 b |
+0.40 |
535.9 |
Kepler-22 |
0.81 |
| KOI-2124.01 |
-0.61 |
624.7 |
KOI-2124 |
0.87 |
| KOI-438.02 |
0.41 |
722.8 |
KOI-438 |
0.72 |
| KOI-701.03 |
+0.07 |
740.4 |
KOI-701 |
0.87 |
| KOI-947.01 |
+0.19 |
796.8 |
KOI-947 |
0.74 |
| KOI-1361.01 |
+0.33 |
799.6 |
KOI-1361 |
0.80 |
| KOI-1876.01 |
+0.49 |
915.1 |
KOI-1876 |
0.82 |
| KOI-2418.01 |
+0.28 |
923.8 |
KOI-2418 |
0.86 |
| KOI-1686.01 |
-0.05 |
1004.3 |
KOI-1686 |
0.93 |
| KOI-2311.01 |
-0.17 |
1024.5 |
KOI-2311 |
0.78 |
| KOI-854.01 |
+0.33 |
1029.9 |
KOI-854 |
0.86 |
| KOI-1938.01 |
+0.22 |
1042.9 |
KOI-1938 |
0.73 |
| KOI-1422.02 |
-0.17 |
1046.9 |
KOI-1422 |
0.81 |
| KOI-2626.01 |
-0.10 |
1085.3 |
KOI-2626 |
0.83 |
| KOI-1871.01 |
+0.40 |
1103.4 |
KOI-1871 |
0.78 |
| KOI-2020.01 |
+0.52 |
1116.0 |
KOI-2020 |
0.82 |
| KOI-2650.01 |
-0.31 |
1168.2 |
KOI-2650 |
0.83 |
| KOI-2290.01 |
+0.07 |
1211.7 |
KOI-2290 |
0.76 |
| KOI-2474.01 |
-0.13 |
1287.0 |
KOI-2474 |
0.88 |
| KOI-812.03 |
+0.16 |
1394.4 |
KOI-812 |
0.82 |
| KOI-2770.01 |
+0.74 |
1405.9 |
KOI-2770 |
0.74 |
| KOI-1430.03 |
+0.44 |
1456.0 |
KOI-1430 |
0.71 |
| KOI-2469.01 |
+0.35 |
1575.5 |
KOI-2469 |
0.79 |
| KOI-2553.01 |
+0.15 |
2181.3 |
KOI-2553 |
0.73 |
| KOI-1739.01 |
+0.20 |
2718.7 |
KOI-1739 |
0.79 |
| KOI-2410.01 |
+0.36 |
3095.1 |
KOI-2410 |
0.68 |
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Key Definitions
HZA Habitable Zone Atmosphere is the measurement of how well a planet can hold an atmosphere that could support life. The measurement is between the numbers -1 and +1. -1 being a very thin atmosphere and +1 being a dense atmosphere probably composed mostly of hydrogen and helium.
LY A light year is a measurement of distance that equals about 6 trillion miles or a bit under 10 kilometers. More specifically it's how far light can travel in a vacuum in one year.
ESI Earth Similarity Index is a scale to measure how similar an exoplanet is to Earth. The scale ranges from zero to one with one being the closest to being Earth-like and zero being the least.
KOI Stands for Kepler Object of Interest. Kepler is a NASA program which primary goal is to seek out and confirm habitable exoplanets throughout the universe.
Exoplanet A planet that is outside of our solar system.
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