Star · K0
Citadelle
Citadelle is a giant star of spectral type K0 in the constellation Pisces, 627.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HD 1502 · HIP 1547 |
|---|---|
| Constellation | Pisces |
| Distance | 627.0 light-years (192.2 pc) |
| Apparent magnitude | magnitude 8.36 |
| Absolute magnitude | magnitude 1.94 |
| Spectral type | K0 |
| Surface temperature | 4,950 K |
| Luminosity | 11.6 L☉ |
| Radius | 4.67 R☉ |
| Mass | 1.46 M☉ |
| Age | 2.4 billion years |
| Metallicity [Fe/H] | 0.09 |
| Right ascension (J2000) | 0h 19m 17.1s |
| Declination (J2000) | +14° 03′ 17″ |
| Space velocity (relative to the Sun) | 70.3 km/s |
In the sky
Too faint for the naked eye (magnitude 8.36); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° 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 1399. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 11 million years.
The Sun seen from there
From a planet around Citadelle, the Sun would look like a star of magnitude 11.25, in the direction where our sky has the constellation Corvus. It would be invisible to the naked eye.
Planets
- HD 1502 b 429-day orbit · 13.2 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.