WR Stars ![]() |
O Stars ![]() |
B Stars ![]() |
A Stars ![]() |
F Stars ![]() |
G Stars ![]() |
K Stars ![]() |
M Stars ![]() |
L Brown Dwarf ![]() |
T Brown Dwarf ![]() |
Y Brown Dwarf ![]() |
Sub Brown Dwarf ![]() |
White Dwarf Stars ![]() |
Neutron Stars ![]() |
Black Holes ![]() |
0 | 0 | 0 | 4 | 1 | 20 | 9 | 10 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
The Total Planet Count within 51 to 60 Light Years includes 0 Mercurian planets, 0 Sub-Terran planets, 1 Terran planets (Earth-Size), 0 Super Terran planets, 6 Sub-Neptunian planets, 6 Neptunian planets, 1 Jovian planets, and 7 Super Jovian planets.
Super Jovian Planets |
Jovian Planets |
Neptunian Planets |
Sub Neptunian Planets |
Super Terran Planets |
Terran Planets |
Sub Terran Planets |
Mercurian Planets |
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7 | 1 | 6 | 6 | 0 | 1 | 0 | 0 |
There are 0 planets within 51 to 60 Light Years that orbit in the habitable zone of their star that might potentially harbor intelligent Alien life.
The most notable planet within 51 to 60 Light Years is planet HD 21749 b. HD 21749 b is a Earth-sized planet that does not orbit within the habitable zone of its star. Is HD 21749 similar to Venus?
Planets have also been categorized according to their ESC, or Earth Similarity Class. Some scientists call this the Earth Simiarlity Index, or ESI. ESC is an indicator of how "Earth-like" a planet may be, based upon the following 20 criteria: whether a planet is in the habitable zone of their star (the area where liquid water could exist), if the planet is tidally locked (one side always faces its star), axial tilt, orbit eccentricity, size, mass, diameter, density, gravity, atmosphere, atmosphere pressure, ozone layer, magnetic field, parent star solar flares, average temperature, liquid water, land, plants, animals, and intelligent beings.
Planets outside of our solar system have ESC's calculated given the current data that is available. Their real ESC may rise or fall once complete data has been discovered. ESC will only be calculated for rocky planets and not for Gas Giant planets. ESC does not nessarily indicate that a planet is "habitable" or can support life as we know it. ESC only gives us a general indication about how that planet compares to Earth given currently available data. Images that are displayed for planets are theoretical based upon the current available data. Images may be updated as new planetary data is discovered.
In addition, any planet that has a green background, is located within the "habitable zone" of that star. The habitable zone of a star is defined as the area around a star where liquid water could possibly reside on a planet, given that the planet has sufficient atmospheric pressure and a temperature that allows for liquid water. It does not indicate that a planet will be "habitable" just because it's located within that star's habitable zone.
Also, any planet that has an orange background, is located in the habitable zone, however, the planet is bombarded by strong solar flares from its parent star. Finally, any planet that has a red background, is located in the habitable zone, however, the planet is bombarded by extreme solar flares from its parent star.
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
403,561 Years | 625.85 Years | 312.92 Years | 156.46 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
430,162 Years | 667.10 Years | 333.55 Years | 166.77 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
431,589 Years | 669.31 Years | 334.66 Years | 167.33 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
436,001 Years | 676.16 Years | 338.08 Years | 169.04 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
436,066 Years | 676.26 Years | 338.13 Years | 169.06 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
446,123 Years | 691.85 Years | 345.93 Years | 172.96 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
454,168 Years | 704.33 Years | 352.16 Years | 176.08 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
458,061 Years | 710.37 Years | 355.18 Years | 177.59 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
467,144 Years | 724.45 Years | 362.23 Years | 181.11 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
471,945 Years | 731.90 Years | 365.95 Years | 182.97 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
476,227 Years | 738.54 Years | 369.27 Years | 184.63 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
481,418 Years | 746.59 Years | 373.29 Years | 186.65 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
482,716 Years | 748.60 Years | 374.30 Years | 187.15 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
494,394 Years | 766.71 Years | 383.36 Years | 191.68 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
494,394 Years | 766.71 Years | 383.36 Years | 191.68 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
495,692 Years | 768.72 Years | 384.36 Years | 192.18 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
499,714 Years | 774.96 Years | 387.48 Years | 193.74 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
506,073 Years | 784.82 Years | 392.41 Years | 196.21 Years |
Chemical Rocket |
Fission Rocket |
Fusion Rocket |
Laser Sail |
507,760 Years | 787.44 Years | 393.72 Years | 196.86 Years |