Characteristics TRAPPIST-1f

1 characteristics

1.1 mass, radius, , temperature
1.2 host star
1.3 orbit

characteristics
mass, radius, , temperature

trappist-1f earth-sized exoplanet, meaning has mass , radius close of earth. has equilibrium temperature of 219 k (−54 °c; −65 °f), increases above 1,400 k (1,130 °c; 2,060 °f) if warming of dense atmosphere taken account. has radius of 1.045 ± 0.038 r⊕ , mass of 0.68 ± 0.18 m⊕, giving density of 7003330000000000000♠3.3±0.9 g/cm. these values suggest surface gravity around 7000610000000000000♠6.1 m/s (62% of earth value).

host star

the planet orbits (m-type) ultracool dwarf star named trappist-1. star has mass of 0.08 m☉ , radius of 0.11 r☉. has temperature of 2550 k , @ least 500 million years old. in comparison, sun 4.6 billion years old , has temperature of 5778 k. star metal-rich, metallicity ([fe/h]) of 0.04, or 109% solar amount. particularly odd such low-mass stars near boundary between brown dwarfs , hydrogen-fusing stars should expected have considerably less metal content sun. luminosity (l☉) 0.05% of of sun.

the star s apparent magnitude, or how bright appears earth s perspective, 18.8. therefore, dim seen naked eye.

orbit

trappist-1f orbits host star orbital period of 9.206 days , orbital radius of 0.037 times of earth s (compared distance of mercury sun, 0.38 au).