Star · K0 IV/V
HD 221416
HD 221416 is a subgiant star of spectral type K0 IV/V in the constellation Aquarius, 311.3 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 116158 |
|---|---|
| Constellation | Aquarius |
| Distance | 311.3 light-years (95.4 pc) |
| Apparent magnitude | magnitude 8.15 |
| Absolute magnitude | magnitude 3.25 |
| Spectral type | K0 IV/V |
| Surface temperature | 5,080 K |
| Luminosity | 5.15 L☉ |
| Radius | 2.94 R☉ |
| Mass | 1.21 M☉ |
| Age | 4.9 billion years |
| Metallicity [Fe/H] | -0.08 |
| Right ascension (J2000) | 23h 32m 08.1s |
| Declination (J2000) | −21° 48′ 05″ |
| Space velocity (relative to the Sun) | 55.5 km/s |
In the sky
Too faint for the naked eye (magnitude 8.15); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1715. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.5 million years.
The Sun seen from there
From a planet around HD 221416, the Sun would look like a star of magnitude 9.73, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Planets
- HD 221416 b 14.3-day orbit · 9.17 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 116533 6.30 light-years
- 99 Aqr 10.4 light-years
- HIP 115924 13.2 light-years
- HIP 116028 17.0 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.