The BD-210397 System
BD-210397 is a planetary system in the constellation Cetus hosting 2 confirmed exoplanets, about 77 light-years from Earth.
BD-210397: Star and Habitable Zone
BD-210397
- Spectral type
- K7 V
- Surface temperature
- 4,051 K (Sun: 5,772 K)
- Mass
- 0.68 M☉
- Radius
- 0.75 R☉
- Luminosity
- 0.1350 L☉
- Age
- 6.2 billion years (Sun: 4.6)
Habitable zone of BD-210397: 0.298–0.752 AU (conservative: 0.377–0.712 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
All 2 Planets in the BD-210397 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| BD-210397 b | Cold Gas Giant | 1,891 d | — | 0.08 | 2023 |
| BD-210397 c | Cold Gas Giant | 6,240 d | — | 0.07 | 2023 |
Discovery History
The first planet found here, BD-210397 b, was discovered in 2023 using the radial velocity method.
- 2023 — BD-210397 b (Radial Velocity)
- 2023 — BD-210397 c (Radial Velocity)
Frequently Asked Questions About BD-210397
How many planets does BD-210397 have?
BD-210397 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the BD-210397 system habitable?
None of the known planets in BD-210397 orbit within the star's habitable zone.
How far away is BD-210397?
BD-210397 is about 77 light-years from Earth in the constellation Cetus.
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