Star · G5
HD 11755
HD 11755 is a supergiant star of spectral type G5 in the constellation Cassiopeia, 759.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 9242 |
|---|---|
| Constellation | Cassiopeia |
| Distance | 759.0 light-years (232.7 pc) |
| Apparent magnitude | magnitude 6.87 |
| Absolute magnitude | magnitude 0.04 |
| Spectral type | G5 |
| Surface temperature | 4,310 K |
| Luminosity | 148 L☉ |
| Radius | 20.6 R☉ |
| Mass | 0.72 M☉ |
| Age | 10.2 billion years |
| Metallicity [Fe/H] | -0.74 |
| Right ascension (J2000) | 1h 58m 50.1s |
| Declination (J2000) | +73° 09′ 09″ |
| Space velocity (relative to the Sun) | 125.1 km/s |
In the sky
Too faint for the naked eye (magnitude 6.87); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 17° S. North of latitude 17° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1267. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around HD 11755, the Sun would look like a star of magnitude 11.66, in the direction where our sky has the constellation Apus. It would be invisible to the naked eye.
Planets
- HD 11755 b 434-day orbit · 12.8 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.