TRAPPIST-1b

TRAPPIST-1b
Exoplanet List of exoplanets

Artists Impression of a Rocky planet orbiting TRAPPIST-1
Parent star
Star TRAPPIST-1[1]
Spectral type M8[1][2]:1236
Mass (m) 0.08 (± 0.009) (± 0.02)[1] M
Radius (r) 0.117 (± 0.004)[1] R
Temperature (T) 2550.0 (± 55.0)[1] K
Age 0.5[1] Gyr
Orbital elements
Semi-major axis(a) 0.01111 (± 0.0004)[1] AU
Eccentricity (e) 0.0[1]
Orbital period(P) 1.510848 (± 1.9e-05)[1] Juliean d
Inclination (i) 89.41 (± 0.41)[1]°
Physical characteristics
Radius(r)0.0993 (± 0.0039) [1] RJ
Discovery information
Discovery date May 2, 2016
Discoverer(s)
Discovery method Transit
Discovery status Published

TRAPPIST-1b is an exoplanet orbiting around the ultracool dwarf star TRAPPIST-1 approximately 40 light-years in the constellation Aquarius.

Habitability

During formation of the system it is possible that water loss during pre-HZ periods occurred.[3] Its estimated that TRAPPIST-1b and TRAPPIST-1c may have lost up to four Earth Oceans possibly compromising its habitability, however TRAPPIST-1d may have been able to keep enough liquid water to sustain life.[3]

Gallery

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Planet TRAPPIST-1 b". Exoplanet.eu. Retrieved 2016-05-06.
  2. Costa, E.; Mendez, R.A.; Jao, W.-C.; Henry, T.J.; Subasavage, J.P.; Ianna, P.A. (August 4, 2006). "The Solar Neighborhood. XVI. Parallaxes from CTIOPI: Final Results from the 1.5 m Telescope Program" (PDF). The Astronomical Journal (The American Astronomical Society) 132 (3). Bibcode:2006AJ....132.1234C. doi:10.1086/505706.
  3. 1 2 "Water loss from Earth-sized planets in the habitable zones of ultracool dwarfs: Implications for the planets of TRAPPIST-1". Emeline Bolmont, Franck Selsis, James E. Owen, Ignasi Ribas, Sean N. Raymond, Jérémy Leconte, Michael Gillon. Retrieved 2016-05-06.
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