Location of Gliese 754 in the constellation
Telescopium
Gliese 754 is a dim
star in the southern
constellation of
Telescopium. It has an
apparent visual magnitude of 12.25,[2] which requires a telescope to view. The star is located at a distance of 19.3
light-years from the
Sun based on
parallax,[1] and it is drifting further away with a
radial velocity of +7 km/s.[3] It is one of the hundred closest stars to the
Solar System. Calculations of its orbit around the Milky Way showed that it is eccentric, and indicate that it might be a
thick disk object.[8]
In June 2019, a candidate
exoplanet was reported in orbit around Gliese 754. It was detected using the
Doppler method and is orbiting at a distance of 0.28
AU with a
period of 78 days. The orbit is essentially circular, to within the
margin of error.[10] The
habitable zone for this star ranges from 0.05
AU to 0.14 AU;[5] inside the orbit of this proposed companion.
^Innanen, K.A.; Flynn, C. (2010). "The Radial Velocity, Space Motion, and Galactic Orbit of GJ 754". Journal of the Royal Astronomical Society of Canada. 104 (6): 223–24.
Bibcode:
2010JRASC.104..223I.
^Wright, Nicholas J.; et al. (September 2018). "The stellar rotation-activity relationship in fully convective M dwarfs". Monthly Notices of the Royal Astronomical Society. 479 (2): 2351–2360.
arXiv:1807.03304.
Bibcode:
2018MNRAS.479.2351W.
doi:
10.1093/mnras/sty1670.