HD 18438 b is a massive gas giant exoplanet or brown dwarf orbiting the star HD 18438, a red giant star located 731.0664 light years (224.146 parsecs) away from planet earth.[1]

Physical characteristics

The planet is a massive planet with a mass 21 Jupiter mass and 1.08 Jupiter radii.[2]

Orbital characteristics

The planet orbits its host star at a distance of 2.1 astronomical units (AU) at a velocity of 305 meters a second taking 803 days to complete one orbit around the star. Its orbital eccentricy is 0.1.[1]

References

  1. 1 2 "HD 18438 | NASA Exoplanet Archive". exoplanetarchive.ipac.caltech.edu. Archived from the original on 8 June 2023. Retrieved 31 October 2023.
  2. ↑ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Archived from the original on 4 June 2023. Retrieved 31 October 2023.
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