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==Characteristics== |
==Characteristics== |
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HD 137010 b was detected using the [[transit method]] from a single event in the Kepler Space Telescope’s data (K2 mission); one transit lasting ~10 hours was recorded. |
HD 137010 b was detected using the [[transit method]] from a single event in the Kepler Space Telescope’s data (K2 mission); one transit lasting ~10 hours was recorded. |
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The exoplanet’s radius is {{val|1.06|0.06|0.05|ul=Earth radius}} Earth radii, which is 6% larger than Earth’s radius. |
The exoplanet’s radius is {{val|1.06|0.06|0.05|ul=Earth radius}} Earth radii, which is 6% larger than Earth’s radius. |
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Its semi-major axis is {{val|0.88|0.3|0.1|ul=AU}}, and its surface temperature can reach –68 °C, which is colder than the average temperature on Mars (–65 °C).<ref name = “:1”></ref><ref name = “:2”></ref> |
Its semi-major axis is {{val|0.88|0.3|0.1|ul=AU}}, and its surface temperature can reach –68 °C, which is colder than the average temperature on Mars (–65 °C).<ref name = “:1”></ref><ref name = “:2”></ref> |
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===Host Star=== |
===Host Star=== |
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The planet orbits ”’HD 137010”’ (”’EPIC 249661074”’), a [[K-type main-sequence star]]. It has a [[stellar classification]] of K3.5V. The star has a mass of 0.726 M☉ and a radius of 0.707 R☉. Its surface temperature is 4770 K, and its age is 7.4 billion years.<ref name=”:1″></ref> |
The planet orbits ”’HD 137010”’ (”’EPIC 249661074”’), a [[K-type main-sequence star]]. It has a [[stellar classification]] of K3.5V. The star has a mass of 0.726 M☉ and a radius of 0.707 R☉. Its surface temperature is 4770 K, and its age is 7.4 billion years.<ref name=”:1″></ref> |
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The star’s [[apparent magnitude]], or how bright it appears from Earth, is 10.1 . It is too faint to be seen with the naked eye.<ref name=”:3″></ref> |
The star’s [[apparent magnitude]], or how bright it appears from Earth, is 10.1 . It is too faint to be seen with the naked eye.<ref name=”:3″></ref> |
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===Orbit=== |
===Orbit=== |
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HD 137010 b has an orbit similar to Earth’s. The exoplanet’s orbital period is {{val|355.0|200.0|59.0|ul=d}}, which is analogous to the orbital period of Kepler-139 f, and it has an inclination of 89.8 ± 0.05 degrees.<ref name = “:3”></ref> |
HD 137010 b has an orbit similar to Earth’s. The exoplanet’s orbital period is {{val|355.0|200.0|59.0|ul=d}}, which is analogous to the orbital period of Kepler-139 f, and it has an inclination of 89.8 ± 0.05 degrees.<ref name = “:3”></ref> |
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Latest revision as of 21:51, 28 January 2026
Candidate Exoplanet
HD 137010 b(also known as EPIC 249661074 b) is a candidate exoplanet discovered by the Kepler telescope during its K2 mission. It is located approximately 146 light-years from Earth. The planet is rocky and orbits a K-type star.[1][2][3]
Radius and temperature
[edit]
HD 137010 b was detected using the transit method from a single event in the Kepler Space Telescope’s data (K2 mission); one transit lasting ~10 hours was recorded.
The exoplanet’s radius is 1.06+0.06
−0.05 R🜨 Earth radii, which is 6% larger than Earth’s radius.
Its semi-major axis is 0.88+0.3
−0.1 AU, and its surface temperature can reach –68 °C, which is colder than the average temperature on Mars (–65 °C).[1][2]
The planet orbits HD 137010 (EPIC 249661074), a K-type main-sequence star. It has a stellar classification of K3.5V. The star has a mass of 0.726 M☉ and a radius of 0.707 R☉. Its surface temperature is 4770 K, and its age is 7.4 billion years.[1]
The star’s apparent magnitude, or how bright it appears from Earth, is 10.1 . It is too faint to be seen with the naked eye.[3]
HD 137010 b has an orbit similar to Earth’s. The exoplanet’s orbital period is 355.0+200.0
−59.0 d, which is analogous to the orbital period of Kepler-139 f, and it has an inclination of 89.8 ± 0.05 degrees.[3]
Despite the possibility of a frigid climate, HD 137010 b also could turn out to be a temperate or even a watery world, say the authors of the paper on this exoplanet. It would just need an atmosphere richer in carbon dioxide than our own. The science team, based on modeling of the planet’s possible atmospheres, gives it a 40% chance of falling within the “conservative” habitable zone around the star, and a 51% chance of falling within the broader “optimistic” habitable zone. On the other hand, the authors of the study say the planet has about a 50-50 chance of falling beyond the habitable zone entirely.[2]
- ^ a b c d Martin, Pierre-Yves (2026). “Planet HD 137010 b”. exoplanet.eu. Retrieved 2026-01-28.
- ^ a b c “Discovery Alert: An Ice-Cold Earth? – NASA Science”. 2026-01-27. Retrieved 2026-01-27.
- ^ a b c Venner, Alexander; Vanderburg, Andrew; X. Huang, Chelsea; Dholakia, Shishir; Schwengeler, Hans Martin; Howell, Steve B.; Wittenmyer, Robert A.; Kristiansen, Martti H.; Omohundro, Mark; Terentev, Ivan A. (2026). “A Cool Earth-sized Planet Candidate Transiting a Tenth Magnitude K-dwarf From K2”. The Astrophysical Journal. 997: L38. arXiv:2601.19870. doi:10.3847/2041-8213/adf06f.
