Perwana
HD 99109 b
IAU name «Perwana» — Pakistan, 2019 contest
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- HD 99109
- Distance from Earth
- 54.7901 pc (≈ 178.7 light-years)
- NASA planet type
- Gas Giant
- Radius (Earth = 1)
- 14.3
- Mass (Earth = 1)
- 139.8452
- Orbital period
- 439.3 days
- Semi-major axis
- 1.11 AU
- Eccentricity
- 0.09
- Equilibrium temperature
- 239.32 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,005
- Discovery facility
- W. M. Keck Observatory
- Host spectral type
- G8/K0 IV
- Host temperature
- 5,282 K
- Host radius (Sun = 1)
- 0.98
- Host mass (Sun = 1)
- 0.76
- Host brightness
- 9.1 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 179 years to reach Earth — the light you see tonight left around AD 1847 (official distance ÷ speed of light).
- Its radius is about 14 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 439.3 Earth days (about 1.2 years) — that is this planet's year.
Worked out from this object's official values.