Star · A7III
Seginus
Seginus is a giant star of spectral type A7III in the constellation Boötes, 86.0 light-years from the Sun.
| Other names | γ Boo · HIP 71075 |
|---|---|
| Constellation | Boötes |
| Distance | 86.0 light-years (26.4 pc) |
| Apparent magnitude | magnitude 3.04 |
| Absolute magnitude | magnitude 0.93 |
| Spectral type | A7III |
| Surface temperature | 8,230 K |
| Luminosity | 39.1 L☉ |
| Radius | 3.07 R☉ |
| Mass | 2.59 M☉ (estimated) |
| Right ascension (J2000) | 14h 32m 04.7s |
| Declination (J2000) | +38° 18′ 30″ |
| Space velocity (relative to the Sun) | 40.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.04). Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1940. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around Seginus, the Sun would look like a star of magnitude 6.94, in the direction where our sky has the constellation Fornax. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 563.1 9.08 light-years
- GJ 3825 9.34 light-years
- GJ 3852 10.9 light-years
- 2MASSW J1411175+393636 12.7 light-years
- GJ 3886 12.7 light-years
- GJ 3853 13.1 light-years
- SDSS J140023.12+433822.3 13.2 light-years
- HD 127506 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.