Madalitso
HD 85390 b
IAU name «Madalitso» — Zambia, 2019 contest
📋 A written introduction is coming — for now this page shows official values only.
Planet
- Host star
- HD 85390
- Distance from Earth
- 33.5225 pc (≈ 109.3 light-years)
- NASA planet type
- Neptune-like
- Radius (Earth = 1)
- 6.16
- Mass (Earth = 1)
- 31.4652
- Orbital period
- 799.52 days
- Semi-major axis
- 1.373 AU
- Eccentricity
- 0.5
- Equilibrium temperature
- 190.89 K
- Discovery method
- Radial Velocity
- Discovery year
- 2,011
- Discovery facility
- La Silla Observatory
- Host spectral type
- K1.5 V
- Host temperature
- 5,186 K
- Host radius (Sun = 1)
- 0.8
- Host mass (Sun = 1)
- 0.758
- Host brightness
- 8.54 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 109 years to reach Earth — the light you see tonight left around AD 1917 (official distance ÷ speed of light).
- Its radius is about 6.2 times Earth's (NASA Exoplanet Archive).
- One orbit takes about 799.5 Earth days (about 2.2 years) — that is this planet's year.
Worked out from this object's official values.