The HD 34445 System
HD 34445 is a planetary system in the constellation Orion hosting 6 confirmed exoplanets, about 150 light-years from Earth. 2 of its planets orbit within the habitable zone, where liquid water could exist on a planetary surface.
HD 34445: Star and Habitable Zone
HD 34445
- Surface temperature
- 5,879 K (Sun: 5,772 K)
- Mass
- 1.14 M☉
- Radius
- 1.38 R☉
Habitable zone of HD 34445: 1.066–2.504 AU (conservative: 1.350–2.374 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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All 6 Planets in the HD 34445 System
| Planet | Type | Orbit | Radius | ESI | Discovered |
|---|---|---|---|---|---|
| HD 34445 b HZ | Cold Gas Giant | 1,049 d | — | 0.34 | 2009 |
| HD 34445 c | Cold Gas Giant | 215 d | — | 0.30 | 2017 |
| HD 34445 d | Neptune-like | 118 d | — | 0.24 | 2017 |
| HD 34445 e | Neptune-like | 49 d | — | 0.21 | 2017 |
| HD 34445 f HZ | Neptune-like | 677 d | — | 0.47 | 2017 |
| HD 34445 g | Cold Gas Giant | 5,700 d | — | 0.12 | 2017 |
Discovery History
The first planet found here, HD 34445 b, was discovered in 2009 using the radial velocity method. The most recent addition, HD 34445 g, followed in 2017.
- 2009 — HD 34445 b (Radial Velocity)
- 2017 — HD 34445 c (Radial Velocity)
- 2017 — HD 34445 d (Radial Velocity)
- 2017 — HD 34445 e (Radial Velocity)
- 2017 — HD 34445 f (Radial Velocity)
- 2017 — HD 34445 g (Radial Velocity)
Frequently Asked Questions About HD 34445
How many planets does HD 34445 have?
HD 34445 has 6 confirmed exoplanets. More may await discovery.
Are any planets in the HD 34445 system habitable?
2 planets in the system orbit within the habitable zone, where liquid water could exist. Actual habitability depends on atmospheres and composition, which are not yet known.
How far away is HD 34445?
HD 34445 is about 150 light-years from Earth in the constellation Orion.
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