WASP-107b

WASP-107b
Exoplanet List of exoplanets

Artist's impression of exoplanet WASP-107b.[1]
Parent star
Star WASP-107
Constellation Virgo
Right ascension (α) 12h 33m 32.848s[2]
Declination (δ) −10° 08′ 46.14″[2]
Apparent magnitude (mV) 11.6[3]
Distance~200[4] ly
(~60[5] pc)
Spectral type K6[3]
Mass (m) 0.69[3] M☉
Orbital elements
Semi-major axis(a) 0.055[3] AU
Eccentricity (e) 0[3]
Orbital period(P) 5.72149[3] d
Physical characteristics
Mass(m)0.12[3] MJ
Radius(r)0.94[3] RJ
Discovery information
Discovery date 2017
Discoverer(s) D. R. Anderson et al.
Discovery method WASP-South
Other detection methods Transit[3]
Discovery status Confirmed
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

WASP-107b is a super-Neptune exoplanet that lies 200 light-years away from Earth in the constellation Virgo.[4] Its discovery was announced in 2017 and led by D. R. Anderson and a team of colleagues via the WASP-South.[6] Helium was discovered in the planet's atmosphere, making it the first time helium was discovered on an exoplanet.[5]

Characteristics

WASP-107b is a super-Neptune gas-giant exoplanet located 200 light years away from Earth in the constellation Virgo.[4] It is roughly the size of Jupiter but only one-eighth of Jupiter’s mass, making it one of the lowest density exoplanets.[4] Its radius is 0.94 times Jupiter's, making its atmosphere fluffy, and coupled with transiting a moderately bright K star makes it a target for atmosphere characterization.[7] It is eight times nearer its star than Mercury is to the Sun and orbits its star every 5.7 days.[4] With a temperature of 932 °F (500 °C), its atmosphere makes it one of the hottest known exoplanets.[4]

References

  1. ↑ heic1809 (2 May 2018). "Hubble detects helium in the atmosphere of an exoplanet for the first time". www.spacetelescope.org. Retrieved 4 May 2018.
  2. 1 2 "WASP-107". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-05-04.
  3. 1 2 3 4 5 6 7 8 9 "Planet WASP-107 b". Extrasolar Planets Encyclopaedia. 2017.
  4. 1 2 3 4 5 6 Reed, Nola (2 May 2018). "An Exoplanet First! Helium Spotted on Bizarre Comet-Like World". Space.com.
  5. 1 2 Witze, Alexandra (2 May 2018). "Astronomers spot helium on exoplanet for first time". Nature.
  6. ↑ https://www.aanda.org/articles/aa/pdf/2017/08/aa30439-17.pdf
  7. ↑ "First results on the atmosphere of WASP-107b". Wide Angle Search for Planets. September 27, 2017.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.