description HD 177830 b Overview
HD 177830 b is a giant exoplanet orbiting the star HD 177830, a K-type star. It was announced in 1999 by a team led by Steven Vogt using radial-velocity observations from the Keck Observatory. The planet takes about 391 days to complete an orbit, placing its orbital period near one Earth year, and its measured orbit is close to circular. It is one of multiple known companions associated with the HD 177830 system.
help HD 177830 b FAQ
What is HD 177830 b?
HD 177830 b is a giant exoplanet orbiting the K-type star HD 177830. Its orbit is relatively long compared with the few-day periods common among early hot-Jupiter discoveries.
How long is HD 177830 b's year?
HD 177830 b takes about 391 days to complete an orbit. That is close to one Earth year, although the planet orbits a different star and has a different planetary environment.
How was HD 177830 b discovered?
Astronomers found it through radial-velocity observations from the Keck Observatory. The method measures the host star's motion rather than directly photographing the planet.
When was HD 177830 b announced?
HD 177830 b was announced in 1999 by a team led by Steven Vogt. The discovery used radial-velocity data from Keck.
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