Mulchatna
HD 17156 b
IAU name «Mulchatna» — United States of America, 2019 contest
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- HD 17156
- Distance from Earth
- 78.0863 pc (≈ 254.7 light-years)
- NASA planet type
- Gas Giant
- Radius (Earth = 1)
- 12.2626
- Mass (Earth = 1)
- 1,036.1206
- Orbital period
- 21.2164 days
- Semi-major axis
- 0.1632 AU
- Eccentricity
- 0.6772
- Equilibrium temperature
- 888 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,007
- Discovery facility
- Subaru Telescope
- Host spectral type
- G5
- Host temperature
- 6,046 K
- Host radius (Sun = 1)
- 1.517
- Host mass (Sun = 1)
- 1.285
- Host brightness
- 8.17 mag
Source:NASA Exoplanet Archive (Caltech/IPAC) · checked 2026-11-02 ↗NASA Science · checked 2026-11-02 ↗NASA Exoplanet Archive (Caltech/IPAC) · checked 2026-11-02 ↗
Related
Host star
In everyday life
- Light from this object takes about 255 years to reach Earth — the light you see tonight left around AD 1771 (official distance ÷ speed of light).
- Its radius is about 12 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 21.2 Earth days — that is this planet's year.
Worked out from this object's official values.