- K2-18, also known as EPIC 201912552, is a red dwarf star with two planetary companions located 124 light-years (38 parsecs) [4] from Earth, in the constellation of Leo.了解详细信息：K2-18, also known as EPIC 201912552, is a red dwarf star with two planetary companions located 124 light-years (38 parsecs) [4] from Earth, in the constellation of Leo.en.wikipedia.org/wiki/K2-18A K-type main-sequence star, also referred to as a K-type dwarf, or orange dwarf, is a main-sequence (hydrogen -burning) star of spectral type K and luminosity class V.en.wikipedia.org/wiki/K-type_main-sequence_starK2-72 (also designated EPIC 206209135) is a cool red dwarf star of spectral class M2.7V located about 217 light-years (67 parsecs) away from the Earth in the constellation of Aquarius.en.wikipedia.org/wiki/K2-72
- 查看更多
前往 Wikipedia 查看全部内容K2-18 - Wikipedia
K2-18, also known as EPIC 201912552, is a red dwarf star with two planetary companions located 124 light-years (38 parsecs) from Earth, in the constellation of Leo. Its name is because it was discovered by the K2 Mission, which extended the mission of the Kepler Space Telescope after failure of two of its … 展开
The star has a transiting exoplanet, called K2-18b, a super-Earth located within the habitable zone of K2-18. It was discovered in 2015 by the Kepler space telescope in its K2 mission. … 展开
CC-BY-SA 许可证中的维基百科文本 K-type main-sequence star - Wikipedia
The revised Yerkes Atlas system (Johnson & Morgan 1953) listed 12 K-type dwarf spectral standard stars, however not all of these have survived to this day as standards. The "anchor points" of the MK classification system among the K-type main-sequence dwarf stars, i.e. those standard stars that have remain unchanged over the years, are:
• Sigma Draconis (K0 V)Wikipedia · CC-BY-SA 许可下的文字K2-18 b - NASA Science
2024年10月24日 · K2-18 b is a super Earth exoplanet that orbits an M-type star. Its mass is 8.92 Earths, it takes 32.9 days to complete one orbit of its star, and is 0.1429 AU from its star. Its discovery was announced in 2015.
K2-18b - Wikipedia
K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a sub-Neptune about 2.6 times the …
Webb Discovers Methane, Carbon Dioxide in Atmosphere of K2-18 b
2023年9月11日 · K2-18 b, an exoplanet 8.6 times as massive as Earth, orbits the cool dwarf star K2-18 in the habitable zone and lies 120 light-years from Earth. A new investigation with …
Star K2-18 - Stellar Catalog
Exoplanet K2-18b, discovered in 2015 with Kepler telescope, is twice as big as Earth - but 9 times more massive. It orbits its star in habitable zone and apparently has water in its atmosphere. It …
K2-72 e - Science@NASA
2024年10月24日 · K2-72 e is a super Earth exoplanet that orbits an M-type star. Its mass is 2.21 Earths, it takes 24.2 days to complete one orbit of its star, and is 0.106 AU from its star. Its …
K2-18 Star Facts - Universe Guide
2025年1月28日 · K2-18 star is located in the constellation of Leo, The Lion. It is not part of the Leo constellation outline but is within the borders of the constellation. K2-18 effective temperature is 3,178 Kelvin which is cooler than …
K2-121 - NASA Science
2025年1月17日 · National Aeronautics and Space Administration. NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.
K2-138 g: Spitzer Spots a Sixth Planet for the Citizen Science System
Using Spitzer photometry, we validate the sixth planet's orbital period of 41.966 ± 0.006 days and measure a radius of 3.44 (+0.32,-.031)Rꚛ, solidifying K2-138 as the K2 system with the most …