Kepler-1229 b [1] is the exoplanet of the star , which is located in the constellation Cygnus at a distance of about 870 light years (267 parsecs ) from the Sun.
| Kepler-1229 b | |
|---|---|
| Exoplanet | |
| Parent star | |
| Star | (KOI-2418) |
| Constellation | Swan |
| Right Ascension ( α ) | 19 h 49 m 56.8076 s |
| Declination ( δ ) | + 46 ° 59 ′ 48.1073 ″ |
| Visible magnitude ( m V ) | 14.474 |
| Distance | St. years old (267 ± 3 pc ) |
| Weight ( m ) | 0.54 ± 0.3 M ☉ |
| Radius ( r ) | 0.51 ± 0.03 R ☉ |
| Temperature ( T ) | 3,784 ± 39 K |
| Metallicity ([Fe / H]) | –0.06 ± 0.1 |
| Age | 3.72 +5.32 −2.07 billion years |
| Elements of the orbit | |
| Semimajor axis ( a ) | 0.2896 (43,320,000 km) [nb 1] a. e. |
| Eccentricity ( e ) | ~ 0 |
| Orbital Period ( P ) | 86.829 [1] d. |
| Inclination ( i ) | ~ 89.5 ° |
| physical characteristics | |
| Weight ( m ) | ~ 2.7 [2] M ⊕ |
| Radius ( r ) | 1.40 +0.11 −0.13 [3] [nb 2] R ⊕ |
| Temperature ( T ) | 213 (-60 ° C; -76 ° F) K |
| Discovery Information | |
| opening date | May 12, 2016 |
| Discoverer (s) | Kepler |
| Detection method | Transit method |
It is located in the Goldilocks zone of the red dwarf [4] [3] . It was discovered in 2016 by the Kepler space telescope [5] . An exoplanet was found using the transit method , a method for detecting exoplanets based on observations of the passage of a planet against a star.
Content
Features
Mass, Radius, and Temperature
Kepler-1229 b is probably a rocky super-earth , an exoplanet with a radius and mass larger than the Earth, but smaller than that of the gas giants Neptune and Uranus . It has an equilibrium temperature of 213 K (-60 ° C; -76 ° F) [2] The mass of Kepler-1229b is unknown, but based on its radius, it is likely to be in the range of about 2.7 M⊕ depending on its composition. [2] .
Inhabitance
It was announced that the exoplanet, along with eight others, is in orbit in the habitable zone of its parent star, an area where, under the right conditions and atmospheric properties, liquid water can exist on the surface of the planet. [5] . Kepler-1229 b has a radius of 1.4 R⊕, so it is most likely rocky. His mother star is a red dwarf , whose mass is about half that of the sun. Stars such as Kepler-1229 can live up to 50-60 billion years, which is 5-6 times longer than the sun will live [6] .
The synchronous rotation of the planet (tidal capture) is very likely when the planet is always turned to the star on one side and the opposite side is shrouded in eternal darkness. However, between these two intense regions there may be a habitat called the terminator line, where temperatures can be suitable (about 273 K (0 ° C; 32 ° F)) for the existence of liquid water. In addition, a much larger part of the planet may be habitable if it maintains a thick enough atmosphere to transfer heat to the side facing away from the star.
See also
- List of potentially viable exoplanets
- Kepler-62 f
Notes
- ↑ 1 2 Morton, Timothy D .; Bryson, Stephen T .; Coughlin, Jeffrey L .; Rowe, Jason F .; Ravichandran, Ganesh; Petigura, Erik A .; Haas, Michael R .; Batalha, Natalie M. False positive probabilities for all Kepler Objects of Interest: 1284 newly validated planets and 428 likely false positives (Eng.) // The Astrophysical Journal : journal. - IOP Publishing 2016 .-- 10 May ( vol. 822 , no. 2 ). - P. 86 . - DOI : 10.3847 / 0004-637X / 822/2/86 . - . - arXiv : 1605.02825 .
- ↑ 1 2 3 The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo . Date of treatment June 27, 2016.
- ↑ 1 2 Kepler-1229 b . NASA Exoplanet Science Institute (May 10, 2016). Date of treatment May 11, 2016.
- ↑ Prostak, Sergio . Astronomers Confirm 1,284 New Kepler Exoplanets , NASA , Sci News (May 11, 2016). Date of treatment May 11, 2016.
- ↑ 1 2 1st Alien Earth Still Elusive Despite Huge Exoplanet Haul , Mike Wall, Space.com
- ↑ Adams, Fred C .. "Red Dwarfs and the End of the Main Sequence." Gravitational Collapse: From Massive Stars to Planets : 46–49, Revista Mexicana de Astronomía y Astrofísica.
[nb 2]
Links
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