HAT-P-13c is a substellar object orbiting the star HAT-P-13 located 698 light years away from Earth in the constellation of Ursa Major. A search for transits was negative, however only 72% of the possible transit configurations could be ruled out.[1] With a mass at least 15.2 times that of Jupiter, it may be a massive planet or a small brown dwarf.[2] The gravitational effect of this object on the inner transiting planet HAT-P-13b may allow a precise determination of the inner planet's internal structure.[3]

HAT-P-13c
Discovery
Discovered byBakos et al.
Discovery site United States
Discovery date21 July 2009
Radial velocity
Orbital characteristics
Apastron2.006 AU (300,100,000 km)
Periastron0.366 AU (54,800,000 km)
1.186+0.018
−0.033
AU
Eccentricity0.691 ± 0.018
428.5 ± 3 d
1.173 ± 0.008 y
2454890.05 ± 0.48
176.7 ± 0.5
StarHAT-P-13

References

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  1. ^ Szabó, Gy. M.; et al. (2010). "A multi-site campaign to detect the transit of the second planet in HAT-P-13". Astronomy and Astrophysics. 523. A84. arXiv:1009.3598. Bibcode:2010A&A...523A..84S. doi:10.1051/0004-6361/201015172. S2CID 118739793.
  2. ^ Bakos, G. Á.; et al. (2009). "HAT-P-13b,c: A Transiting Hot Jupiter with a Massive Outer Companion on an Eccentric Orbit". The Astrophysical Journal. 707 (1): 446–456. arXiv:0907.3525. Bibcode:2009ApJ...707..446B. doi:10.1088/0004-637X/707/1/446. S2CID 7591731.
  3. ^ ATYGIN K., BODENHEIMER P. & LAUGHLIN G., 2009 "Determination of the Interior Structure of Transiting Planets in Multiple-Planet Systems" ApJ. Letters 2009 preprint
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