The HD 21693 System
HD 21693 is a planetary system in the constellation Reticulum hosting 2 confirmed exoplanets, about 109 light-years from Earth.
HD 21693: Star and Habitable Zone
HD 21693
- Spectral type
- G8 V
- Surface temperature
- 5,430 K (Sun: 5,772 K)
- Mass
- 0.80 M☉
- Luminosity
- 0.6200 L☉
Habitable zone of HD 21693: 0.603–1.435 AU (conservative: 0.764–1.361 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 HD 21693 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 21693 b | Super Earth | 23 d | — | 0.26 | 2019 |
| HD 21693 c | Neptune-like | 54 d | — | 0.28 | 2019 |
Discovery History
The first planet found here, HD 21693 b, was discovered in 2019 using the radial velocity method.
- 2019 — HD 21693 b (Radial Velocity)
- 2019 — HD 21693 c (Radial Velocity)
Frequently Asked Questions About HD 21693
How many planets does HD 21693 have?
HD 21693 has 2 confirmed exoplanets. More may await discovery.
Are any planets in the HD 21693 system habitable?
None of the known planets in HD 21693 orbit within the star's habitable zone.
How far away is HD 21693?
HD 21693 is about 109 light-years from Earth in the constellation Reticulum.
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