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Exoplanet orbiting KELT-3 From Wikipedia, the free encyclopedia
KELT-3b is an extrasolar planet orbiting the F-type main-sequence star KELT-3 690 light years in the zodiac constellation Leo. It was discovered in 2013 by KELT's telescope in Arizona.
Discovery | |
---|---|
Discovered by | Pepper et al. 2013 |
Discovery date | 2013 |
Transit | |
Orbital characteristics | |
0.04120 ± 0.00067[1]AU | |
Eccentricity | 0.202[1] |
2.7033902 d[1] | |
Inclination | 84.25+0.67 −0.64°[1] |
Star | KELT-3 |
Physical characteristics | |
1.56±0.11RJ[2] | |
Mass | 1.94±0.33MJ[2] |
Temperature | 2132±133[3] |
This planet has 44% more mass than Jupiter, but has expanded to 1.34 times the radius of the latter. It has a temperature of 1,811 K, which gives it a Hot Jupiter class. KELT-3b has a lower density than Jupiter, and completes a revolution in less in 3 days. This corresponds with an orbital distance of 0.04 AU, which is 10 times closer than Mercury (planet) orbits the Sun.
The planetary equilibrium temperature is 1829±42 K, but measured temperature is hotter at 2132±133 K.[3] The radiation of the moderately active host star KELT-3 do not produce a detectable ionization and consequent Lyman-alpha line emission in the atmosphere of the KELT-3b. [4]
KELT-3b was discovered in 2013. The light curves and parameters of both the planet and the star were observed. The paper also states that there is uncertainty about the system’s[further explanation needed] age.[1]
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