Star · A1IV
63 Sgr
63 Sgr is a subgiant star of spectral type A1IV in the constellation Sagittarius, 296.8 light-years from the Sun.
| Other names | HIP 98633 |
|---|---|
| Constellation | Sagittarius |
| Distance | 296.8 light-years (91.0 pc) |
| Apparent magnitude | magnitude 5.69 |
| Absolute magnitude | magnitude 0.89 |
| Spectral type | A1IV |
| Surface temperature | 9,240 K |
| Luminosity | 46.1 L☉ |
| Radius | 2.65 R☉ |
| Mass | 2.71 M☉ (estimated) |
| Right ascension (J2000) | 20h 01m 58.6s |
| Declination (J2000) | −13° 38′ 14″ |
| Space velocity (relative to the Sun) | 48.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.69). Visible from the whole Southern Hemisphere and north to latitude 76° N. South of latitude 76° 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 1729. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.3 million years.
The Sun seen from there
From a planet around 63 Sgr, the Sun would look like a star of magnitude 9.63, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 99077 9.54 light-years
- HIP 99773 18.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.