Gliese 806

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Gliese 806
Observation data
Epoch {{{epoch}}}      Equinox
Constellation Cygnus
Right ascension 20h 45m 04.10s
Declination +44° 29′ 56.66″
Apparent magnitude (V) +10.84
Characteristics
Spectral type M1.5V
Astrometry
Distance 40.75 ly
(12.5 pc)
Details
Mass 0.48 M
Radius 0.44 R
Luminosity 0.027 L
Temperature 3540 K
Other designations
HIP 102401, GJ 806, TYC 3178-00633-1, 2MASS J20450403+4429562
Database references
SIMBAD data

Gliese 806 is a red dwarf star in the constellation of Cygnus, located roughly 41 light years from the Sun. The star is suspected to host a substellar companion yet unconfirmed.

A planetary companion?[edit]

According to Marcy & Benitz (1989)[1] detected a possible periodicity of 416 day]s, inferring possible presence of a massive planetary object with minimum mass of 11 times that of Jupiter. So far the planet has not been confirmed.

The Gliese 806 planetary system[1]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b (unconfirmed) ≥11 MJ 0.878 416 0.2

References[edit]

  1. ^ a b Marcy & Benitz; Benitz, Karsten J. (1989). "A search for substellar companions to low-mass stars". Astrophysical Journal, Part 1 344 (1): 441–453. Bibcode:1989ApJ...344..441M. doi:10.1086/167812.