Star · K3III
χ³ Sgr
χ³ Sgr is a giant star of spectral type K3III in the constellation Sagittarius, 511.4 light-years from the Sun.
| Other names | HIP 95503 |
|---|---|
| Constellation | Sagittarius |
| Distance | 511.4 light-years (156.8 pc) |
| Apparent magnitude | magnitude 5.45 |
| Absolute magnitude | magnitude −0.53 |
| Spectral type | K3III |
| Surface temperature | 3,880 K |
| Luminosity | 456 L☉ |
| Radius | 47.2 R☉ |
| Mass | 5.22 M☉ (estimated) |
| Right ascension (J2000) | 19h 25m 29.7s |
| Declination (J2000) | −23° 57′ 45″ |
| Space velocity (relative to the Sun) | 43.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.45). Visible from the whole Southern Hemisphere and north to latitude 66° N. South of latitude 66° 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 1515. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 9.1 million years.
The Sun seen from there
From a planet around χ³ Sgr, the Sun would look like a star of magnitude 10.81, in the direction where our sky has the constellation Gemini. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.