HD 27894
A metal-rich K dwarf with three confirmed exoplanets.
Last updated
HD 27894 is a single star in the southern constellation Reticulum, too faint to be seen without a telescope at an apparent visual magnitude of 9.36. It lies 142.5 light years from the Sun and is drifting away with a radial velocity of 83 km/s. The star is a K-type main-sequence orange dwarf with a stellar classification of K2 V, spinning slowly with a rotation period of roughly 44 days.
Quick Facts
- Constellation
- Reticulum
- Apparent visual magnitude
- 9.36
- Distance
- 142.5 light years
- Radial velocity
- 83 km/s
- Stellar classification
- K2 V
- Rotation period
- roughly 44 days
- Mass
- 83% of the Sun
- Radius
- 79% of the Sun
Facts from the source article.
Planetary system
The first exoplanet in this system was announced in 2005 by the Geneva Extrasolar Planet Search Team. Two additional exoplanets were announced in 2017: one orbits very close to the star, like the earlier planet, while the other orbits at a much larger distance, making this the first system found with such a large gap between orbital distances. In 2022, astrometry measured the inclination and true mass of HD 27894 d, though the study found strong evidence only for planets b and d.
More in Planetary Systems with Three Confirmed Planets
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: HD 27894 (CC BY-SA 4.0).
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