1. HD 85512 b
On August 17, 2011, researchers released a study of the planet.
Planet Earth has a mass of at least 3.6 ± 0.5, the minimum surface gravity of about 1.4 g and assuming the earth's atmosphere as though its mass is much larger, estimated temperature of 298 K (25 ° C or 77 ° F) in the over its estimated suasana.Suhu noted to be similar to the temperature in southern France, but the
atmospheric conditions still require further observations to estimate the surface temperature. It orbits its parent star at a distance of about 0.26 AU, with an orbital period of about 54 days.
If the planet has a cloud of 50%, there may be liquid water on the planet atmosphere similar to that supplied our own, thus making the planet habitable. Also, if. Albedo of the planet is increasing because of the clouds, the water can hadirdalam liquid form on the planet, which means that the planet is on the edge of habitability.
Potential of super-Earth planets are called by the name of HD 85512 b is estimated to weigh only 3.6 times that of the earth and the origin of it is only 35 light years.
2. Gliese 581 C
also called HO Librae c, Wolf 562 c, and HIP 74 995 c, is a super-Earth exoplanet orbiting or red dwarf star Gliese 581. [1] The possibility of this planet is in the habitable zone, where surface temperatures allow adanyaair. This planet is 20.4 light years (193 trillion miles) from Earth and lies in the constellation of Libra. Gl 581, or Gliese 581, a star in the order of 581 to Gliese catalog. The catalog is made by Gliese, was published in 1969 and updated in 1991 by Gliese and Jahreiss.
Normal temperature of the planet ranges from 0-40 ° C (32-104 ° F), Gliese 581 c is probably the first planet outside the solar system similar to Earth. Mass of the planet is about five times that of Earth, and is the smallest planet found outside the solar system to date. (Calculation based on the mass of the other planets of this system, Gliese 581 b is known. Gliese 581 c The inventors believe there is a third planet, Gliese 581 d, Gliese 581 c so would have 5.03 times the mass of Earth). Based on the assumption that these planets are rocky planets and not a cold planet, then the planet will have a radius 50% larger than the Earth, where the surface gravity is approximately 2.1 times stronger than on Earth. The estimated planetary system 4.3 billion years old.
Gliese 581 c has an orbital period of 13 days and orbits the Earth 14 times closer to its parent star than the Earth's orbit around the Sun, about 11 million kilometers from its star, while the Earth is 150 million kilometers from the Sun.
Gl 581 d is an extrasolar planet orbiting the star Gliese 581 about 20 light-years away in the constellation Libra. It is the fifth planet in order from the star.
Because of its mass, at least 5.6 times that of Earth, the planet is classified sebagaisuper-Earth. Originally believed to be outside the habitable zone, in late April 2009 new observations made by the original discovery team concluded that the planet is on the edge of the habitable zone where liquid water may exist. In May 2011 researchers in France released a three-dimensional climate simulation study concludes that it is plausible that the planet has a stable atmosphere and liquid water on the surface, agree that it is the first discovered terrestrial-mass planets in the habitable zone, followed by the HD 85 512 b a few months later.
On average, the light that Gliese 581 d receives from its star has about 30% of the intensity of sunlight on Earth. For comparison, the sunlight on Mars has about 40% of the intensity at Earth. It might seem to indicate that Gliese 581 d is too cold to support liquid water and therefore not suitable for habitation. However, the greenhouse effect in the atmosphere can significantly increase the temperature of the planet. For example, the average temperature of the Earth itself will be around -18 ° C [8] without greenhouse gases, ranging from about 100 ° C in the day and -150 ° C at night, such as those found on the Moon. If the atmosphere of Gliese 581 d the greenhouse effect is quite large, and planetary geophysics stabilize CO2 levels (like the Earth not through plate tectonics), the surface temperature may allow liquid water cycle, which conceivably allow the planet to support life
5. Gj- 667Cc
Group of international scientists claim to have discovered the planet habitable super suspected. As mentioned in the Astrophysical Journal Letters, Thursday (02/02/2012), when the planet's orbit about 28 days and the mass is 4.5 times the size of Earth.
The team consists of scientists from the University of California, Santa Cruz astronomer (UCSC) named Steven Vogt and Eugenio Rivera and was led by Guillem Anglada-Escud, and Paul Butler of the Carnegie Institution of Natural Sciences. The results of their findings, the path the planet is in the scope of the region of stars that can be inhabited, the temperature is not too hot or too cold for liquid on the planet's surface.
The researchers found evidence of at least one or maybe two even three additional planets around a star at a distance of about 22 light years from Earth.
Big star of the planet is a member of the tri-star system and has a different material from the sun contains less number of elements heavier than helium, such as iron, carbon and silicon. This finding indicates that the possibility of a habitable planet can happen at the level of the environment is more extensive than previously believed.
The main star planet, dubbed GJ 667C is a little star-level M. Two other stars in the tri-star system (GJ 667 AB) is a pair of orange dwarf star with a core grades K substance weighing only 25 percent of our sun. The elements are the foundation of the establishment of a number of planets in the universe that is considered impossible for a system containing a small amount of metal has a low-mass planets.
"It is expected to be the star seems unusual that have planets. Yet they were there, near the surrounding scope and be an example of that most contain little metal elements in our galaxy," said Vogt, professor of astronomy and astrophysics at UCSC.
Vogt said the discovery of the planet with close proximity and rapid time to explain, that the Milky Way must be filled with billions of rocky planets that may be habitable.
6. Keppler-22b
Kepler-22b is the first extrasolar planet was confirmed in the habitable zone. This planet was discovered by NASA's space telescope Keplermilik. [5] Its discovery was announced on 5 December 2011 [5] The planet is actually found on the third day of the operation in mid-2009 Kepler Transit dilacaktemu third by the end of 2010 an additional assurance of data obtained from Spitzer space telescope and ground observations. The radius of the planet is estimated to be about 2.4 times the radius of Earth. The distance is 600 light years from Earth. Kepler-22 orbits the G-type star named Kepler 22.
So far, the mass and composition of the surface density as the Earth has not diketahui.Jika (5,515 g / cm 3), then the mass of Kepler-22b will be recorded approximately 13.8 times the mass of Earth, while the surface gravity would be recorded as 2.4 times that of Earth. If the density is like water (1 g / cm 3), then its mass will be recorded about 2.5 times the Earth [and 0.43 times Earth's surface gravity.
The distance to the star Kepler-22b is estimated at about 15% smaller than the distance of the Sun to the Earth. [2] [6] However, the brightness of Kepler-22, 25% smaller than the Sun. If there is no atmosphere, the average temperature of the planet is estimated to be -11 ° C. If it occurs in the atmosphere as the greenhouse effect on Earth, the average temperature of Kepler-22b would be recorded at 22 ° C (72 ° F).
Kepler-62e is a super-Earth exoplanet (extrasolar planet) discovered in orbit around the star Kepler-62, the second outermost of five such planets discovered by NASA's Kepler spacecraft. Kepler-62e is located about 1,200 ly (370 pc) from Earth in the constellation of Lyra.[4] The exoplanet was found using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. Kepler-62e may be a terrestrial or water-ice-dominated solid planet; it lies in the inner part of its host star's habitable zone[2][5] and has an Earth Similarity Index of 0.83.
Given the planet's age (7 ± 4 billion years), stellar flux (1.2 ± 0.2 times Earth's) and radius (1.61 ± 0.05 times Earth's), a rocky (silicate-iron) composition with the addition of a possibly substantial amount of water is considered plausible.[2] A modeling study accepted in The Astrophysical Journal suggests it is likely that a great majority of planets in Kepler-62e's size range are completely covered by ocean.[6][7]
Kepler-62e orbits its host star every 122 days and is roughly 60 percent larger than Earth
8. Gliese 667 Cc
Gliese 667 Cc is an extrasolar planet, or exoplanet, orbiting around the star Gliese 667 C which is a member of the Gliese 667triple star system. The minimum mass of Gliese 667 Cc is about 4.39 Earth masses.[1]
8. Gliese 667 Cc
Gliese 667 Cc is an extrasolar planet, or exoplanet, orbiting around the star Gliese 667 C which is a member of the Gliese 667triple star system. The minimum mass of Gliese 667 Cc is about 4.39 Earth masses.[1]
Gliese 667 Cc (also known as GJ 667Cc or HR 6426Cc) is in a nearby triple star system (Gliese 667) in the constellation Scorpius, 22.7 light years away. Gliese 667 Cc was first announced in a pre-print made public on 21 November 2011 by theEuropean Southern Observatory's HARPS group using the radial velocity method (Doppler method).[2] However, the announcement of a refereed journal report came on 2 February 2012 by researchers at the University of Göttingen and theCarnegie Institution for Science.[3]
The star Gliese 667 C hosts at least 7 planets and 3 of those, all rocky planets (including Gliese 667 Cc), are within thehabitable zone. Gliese 667 Cc is located on the inner edge of the habitable zone. With the semi-major axis of only 0.1251 astronomical units, a year on Gliese 667Cc is only 28.155 days. Gliese 667Cc is said to be one of the most physically similar known exoplanets to Earth with an ESI value of 0.85. Based on GJ 667 C's bolometric luminosity, GJ 667 Cc would receive 90% of the light Earth does; however, much of that electromagnetic radiation would be in the invisible infrared light part of the spectrum. Based on black body temperature calculation, GJ 667 Cc should absorb more overall electromagnetic radiation, making it warmer (277.4 K) and placing it slightly closer to the "hot" edge of the habitable zone than Earth (254.3 K)
Kepler-62f[2][4][5] (also known by its Kepler Object of Interest designation KOI-701.04) is a super-Earth exoplanet (extrasolar planet) in orbit around the star Kepler-62, the outermost of five such planets discovered by NASA's Kepler spacecraft. Kepler-62f is located about 1200 light-years (370 parsecs, or roughly 11,350,000,000,000,000 km) from Earth in the constellation ofLyra.[6] The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. Kepler-62f may be a terrestrial or water-dominated solid planet; it lies within the outer part of its host star's habitable zone[2][7] and has an Earth Similarity Index of 0.69.
Given the planet's age (7 ± 4 billion years), irradiance (0.41 ± 0.05 times Earth's) and radius (1.41 ± 0.07 times Earth's), a rocky (silicate-iron) composition with the addition of a possibly substantial amount of water is considered plausible.[2] A modeling study accepted in The Astrophysical Journal indicates it is likely that a great majority of planets in its size range are completely covered by ocean (possibly frozen, if Kepler-62f is indeed such a planet).[8][9] If its density is the same as Earth's, its mass would be 1.413 or 2.80 times Earth's.
10. Kepler-69c
(also known by its Kepler Object of Interest designation KOI-172.02) is a confirmed super-Earthextrasolar planet, about 70% larger than Earth, orbiting a Sun-like G-type star, Kepler-69, located about 2,700 ly (830 pc) fromEarth in the constellation of Cygnus. The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. Kepler-69c is most likely a terrestrial planet. Initial discovery of the planet was announced on January 7, 2013; confirmation was announced on April 18, 2013. Although it was initially thought to be in the habitable zone,[15] it is now thought to represent a super-Venus, analogous toVenus but more massive, and thus highly unlikely to be habitable.The planet was announced in the media as being located within the star's "habitable zone", a region where liquid water could exist on the surface of the planet. It was described as being one of the most Earth-like planets, in terms of size andtemperature yet found and, according to the scientists, a "prime candidate to host alien life".[8] Due to uncertainties in the stellar parameters, the error bars on the value of the incident flux on this planet are quite large, at 1.91+0.43
−0.56 times the level of Earth. Using the nominal parameters, the planet is too close to the star to be habitable, though the uncertainties allow for the possibility that it may actually lie in the innermost region of the habitable zone.[16] A more recent analysis has shown that the planet is likely more analogous to Venus, which is known to be one of the most inhospitable places in the Solar System, and thus unlikely to be habitable.
Source : en.wikipedia.org
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