Star · F8
HD 220842
HD 220842 is a main-sequence star of spectral type F8 in the constellation Cassiopeia, 211.8 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 115714 |
|---|---|
| Constellation | Cassiopeia |
| Distance | 211.8 light-years (64.9 pc) |
| Apparent magnitude | magnitude 7.98 |
| Absolute magnitude | magnitude 3.92 |
| Spectral type | F8 |
| Surface temperature | 5,960 K |
| Luminosity | 2.28 L☉ |
| Radius | 1.42 R☉ |
| Mass | 1.13 M☉ |
| Metallicity [Fe/H] | -0.17 |
| Right ascension (J2000) | 23h 26m 37.0s |
| Declination (J2000) | +56° 53′ 12″ |
| Space velocity (relative to the Sun) | 56.6 km/s |
In the sky
Too faint for the naked eye (magnitude 7.98); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 33° S. North of latitude 33° N 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 1814. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around HD 220842, the Sun would look like a star of magnitude 8.89, in the direction where our sky has the constellation Centaurus. It would be invisible to the naked eye.
Planets
- HD 220842 b 218-day orbit · 13.1 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 116139 11.0 light-years
- HIP 118077 16.6 light-years
- HIP 113789 16.8 light-years
- HIP 116251 19.8 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.