Star · M2 III
HD 220074
HD 220074 is a main-sequence star of spectral type M2 III in the constellation Cassiopeia, 1,082 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 115218 |
|---|---|
| Constellation | Cassiopeia |
| Distance | 1,082 light-years (331.8 pc) |
| Apparent magnitude | magnitude 6.39 |
| Absolute magnitude | magnitude −1.21 |
| Spectral type | M2 III |
| Surface temperature | 3,790 K |
| Luminosity | 783 L☉ |
| Radius | 54.9 R☉ |
| Mass | 2.2 M☉ |
| Age | 4.5 billion years |
| Metallicity [Fe/H] | -0.25 |
| Right ascension (J2000) | 23h 20m 14.4s |
| Declination (J2000) | +61° 58′ 12″ |
| Space velocity (relative to the Sun) | 39.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.39). Visible from the whole Northern Hemisphere and south to latitude 28° S. North of latitude 28° 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 944. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around HD 220074, the Sun would look like a star of magnitude 12.43, in the direction where our sky has the constellation Carina. It would be invisible to the naked eye.
Planets
- HD 220074 b 672-day orbit · 12.2 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.