Star · A0V
κ¹ Sgr
κ¹ Sgr is a main-sequence star of spectral type A0V in the constellation Sagittarius, 222.9 light-years from the Sun.
| Other names | HIP 100469 |
|---|---|
| Constellation | Sagittarius |
| Distance | 222.9 light-years (68.4 pc) |
| Apparent magnitude | magnitude 5.60 |
| Absolute magnitude | magnitude 1.43 |
| Spectral type | A0V |
| Surface temperature | 10,100 K |
| Luminosity | 32.2 L☉ |
| Radius | 1.85 R☉ |
| Mass | 2.45 M☉ (estimated) |
| Right ascension (J2000) | 20h 22m 27.5s |
| Declination (J2000) | −42° 02′ 58″ |
| Space velocity (relative to the Sun) | 30.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.60). Visible from the whole Southern Hemisphere and north to latitude 48° N. South of latitude 48° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1803. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.0 million years.
The Sun seen from there
From a planet around κ¹ Sgr, the Sun would look like a star of magnitude 9.00, in the direction where our sky has the constellation Lynx. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 100706 5.46 light-years
- HIP 100818 10.9 light-years
- HIP 101591 12.3 light-years
- HIP 98972 15.7 light-years
- HIP 99139 15.8 light-years
- HIP 99668 16.2 light-years
- HIP 100787 19.0 light-years
- HIP 101558 19.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.