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Kepler-17b

Kepler-17b
Discovery
Discovered byAldo S. Bonomo et al.
Discovery date25 October 2011
Transit method
Orbital characteristics
0.0268 ± 0.0005 AU (4,009,000 ± 75,000 km)[1]
1.4857108 ± 0.0000002[1] d
Inclination87.22 ± 0.15[1]
StarKepler-17
Physical characteristics
1.33 ± 0.04[1] RJ
Mass2.47 ± 0.10[1] MJ
Mean density
1.30 ± 0.14 g/cm3 (0.0470 ± 0.0051 lb/cu in)[1]
3.54 ± 0.03 m/s2 (11.614 ± 0.098 ft/s2)[1]
Temperature2229+50
−58 K.[2]
Kepler-17b's size relative to Earth (left) and Jupiter (right)

Kepler-17b is a planet in the orbit of star Kepler-17, first observed by the Kepler spacecraft observatory in 2011. Kepler-17b is a gas giant nearly 2.45 times the mass of Jupiter, and is sometimes described as a "super-Jupiter". The planet is likely to be tidally locked to the parent star. In 2015, the planetary nightside temperature was estimated to be equal to 2229+50
−58 K.[2]

The study in 2012, utilizing a Rossiter–McLaughlin effect, have determined the planetary orbit is probably aligned with the equatorial plane of the star, misalignment equal to 0±15°.[3]

References

  1. ^ a b c d e f g Bonomo, A. S.; Hébrard, G.; Santerne, A.; Santos, N. C.; Deleuil, M.; Almenara, J.; Bouchy, F.; Díaz, R. F.; Moutou, C.; Vanhuysse, M. (2012). "SOPHIE velocimetry of Keplertransit candidates". Astronomy & Astrophysics. 538: A96. arXiv:1110.5462. Bibcode:2012A&A...538A..96B. doi:10.1051/0004-6361/201118323. S2CID 118528032.
  2. ^ a b A Comprehensive Study of Kepler Phase Curves and Secondary Eclipses:Temperatures and Albedos of Confirmed Kepler Giant Planets
  3. ^ Albrecht, Simon; Winn, Joshua N.; Johnson, John A.; Howard, Andrew W.; Marcy, Geoffrey W.; Butler, R. Paul; Arriagada, Pamela; Crane, Jeffrey D.; Shectman, Stephen A.; Thompson, Ian B.; Hirano, Teruyuki; Bakos, Gaspar; Hartman, Joel D. (2012), "Obliquities of Hot Jupiter Host Stars: Evidence for Tidal Interactions and Primordial Misalignments", The Astrophysical Journal, 757 (1): 18, arXiv:1206.6105, Bibcode:2012ApJ...757...18A, doi:10.1088/0004-637X/757/1/18, S2CID 17174530
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