Hämarik
XO-4 b
IAU name «Hämarik» — Estonia, 2019 contest
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- XO-4
- Distance from Earth
- 272.655 pc (≈ 889.3 light-years)
- NASA planet type
- Gas Giant
- Radius (Earth = 1)
- 14.0113
- Mass (Earth = 1)
- 451.3186
- Orbital period
- 4.1251 days
- Semi-major axis
- 0.05524 AU
- Eccentricity
- 0
- Equilibrium temperature
- 1,630 K
- Discovery method
- Transit
- Discovery year
- 2,010
- Discovery facility
- Lowell Observatory
- Host spectral type
- F5 V
- Host temperature
- 6,397 K
- Host radius (Sun = 1)
- 1.45
- Host mass (Sun = 1)
- 1.1
- Host brightness
- 10.814 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 889 years to reach Earth — the light you see tonight left around AD 1137 (official distance ÷ speed of light).
- Its radius is about 14 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 4.1 Earth days — that is this planet's year.
Worked out from this object's official values.