Star · F8
HD 278555
HD 278555 is a main-sequence star of spectral type F8 in the constellation Perseus, 920.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Perseus |
|---|---|
| Distance | 920.5 light-years (282.2 pc) |
| Apparent magnitude | magnitude 11.08 |
| Absolute magnitude | magnitude 3.83 |
| Spectral type | F8 |
| Surface temperature | 6,050 K |
| Luminosity | 3.13 L☉ |
| Radius | 1.62 R☉ |
| Mass | 1.26 M☉ |
| Age | 3.8 billion years |
| Metallicity [Fe/H] | 0.27 |
| Right ascension (J2000) | 3h 21m 28.3s |
| Declination (J2000) | +32° 54′ 50″ |
| Space velocity (relative to the Sun) | 37.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.08. Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1106. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 16 million years.
The Sun seen from there
From a planet around HD 278555, the Sun would look like a star of magnitude 12.08, in the direction where our sky has the constellation Lupus. It would be invisible to the naked eye.
Planets
- HD 278555 b 28.8-day orbit · 11 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.