Star · A3
4 Cam
4 Cam is a main-sequence star of spectral type A3 in the constellation Camelopardalis, 176.8 light-years from the Sun.
| Other names | HIP 22287 |
|---|---|
| Constellation | Camelopardalis |
| Distance | 176.8 light-years (54.2 pc) |
| Apparent magnitude | magnitude 5.29 |
| Absolute magnitude | magnitude 1.62 |
| Spectral type | A3 |
| Surface temperature | 7,820 K |
| Luminosity | 20 L☉ |
| Radius | 2.43 R☉ |
| Mass | 2.14 M☉ (estimated) |
| Right ascension (J2000) | 4h 48m 00.3s |
| Declination (J2000) | +56° 45′ 26″ |
| Space velocity (relative to the Sun) | 46.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.29). 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 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 1849. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around 4 Cam, the Sun would look like a star of magnitude 8.50, in the direction where our sky has the constellation Ara. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 22569 3.81 light-years
- HIP 22300 8.54 light-years
- HIP 23509 11.3 light-years
- HIP 23692 15.2 light-years
- HIP 20690 16.5 light-years
- HIP 24658 17.9 light-years
- HIP 23694 18.4 light-years
- HIP 23913 18.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.