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KELT-4Ab

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KELT-4Ab is an extrasolar planet that orbits the star KELT-4A, in the star system KELT-4. The planet is approximately 685 ly (210 pc)* away in the constellation of Leo.[1] The planet was discovered by the Kilodegree Extremely Little Telescope (KELT).

Planet

The exoplanet was discovered by transit and is a Hot Jupiter planet orbiting a star in a triple star system, KELT-4. It is the fourth planet found in such a system.[2] As KELT-4A is the brightest host (V~10) of a Hot Jupiter in a hierarchical triple stellar system found so far researchers expect it may be useful in learning more about inflated planets.[3][4]

Star system

KELT-4 is a triple star system. KELT-4BC is a binary star system subcomponent of the triple, 328 ± 16 AU (4.91×1010 ± 2.4×109 km; 3.05×1010 ± 1.5×109 mi) away from KELT-4A and the projected separation between KELT-4B and KELT-4C is 10.30 ± 0.74 AU (1.541×109 ± 111,000,000 km; 957,000,000 ± 69,000,000 mi).[3]

See also

  • Gliese 667 Cc, a planet in a triple star system
  • KELT-2Ab, a previous planet discovered by the KELT survey, in a binary system
  • KELT

References

  1. ^ "Planet KELT-4A b". Open Exoplanet Catalogue. Retrieved 2016-04-02.
  2. ^ Bob Yirka (1 April 2016). "Planet with triple-star system found". Phys.org. Retrieved 3 April 2016.
  3. ^ a b Eastman, Jason D.; et al. (2016). "KELT-4Ab: An Inflated Hot Jupiter Transiting The Bright (V ~ 10) Component Of A Hiearchical Triple". The Astrophysical Journal. 151 (2). arXiv:1510.00015. Bibcode:2016AJ....151...45E. doi:10.3847/0004-6256/151/2/45.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  4. ^ Nola Taylor Redd (31 March 2016). "New Alien Planet Boasts Rare Triple Suns". Retrieved 2 April 2016.
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