Star · A7V
45 Ser
45 Ser is a main-sequence star of spectral type A7V in the constellation Serpens, 324.6 light-years from the Sun.
| Other names | HIP 79007 |
|---|---|
| Constellation | Serpens |
| Distance | 324.6 light-years (99.5 pc) |
| Apparent magnitude | magnitude 5.63 |
| Absolute magnitude | magnitude 0.64 |
| Spectral type | A7V |
| Surface temperature | 8,160 K |
| Luminosity | 50.9 L☉ |
| Radius | 3.57 R☉ |
| Mass | 2.79 M☉ (estimated) |
| Right ascension (J2000) | 16h 07m 37.5s |
| Declination (J2000) | +9° 53′ 30″ |
| Space velocity (relative to the Sun) | 29.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.63). Visible from the whole Northern Hemisphere and south to latitude 80° S. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1701. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.8 million years.
The Sun seen from there
From a planet around 45 Ser, the Sun would look like a star of magnitude 9.82, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 78321 13.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.