Star · G2I
HIP 74305
HIP 74305 is a supergiant star of spectral type G2I in the constellation Lupus, 2,258 light-years from the Sun.
| Constellation | Lupus |
|---|---|
| Distance | 2,258 light-years (692.2 pc) |
| Apparent magnitude | magnitude 5.45 |
| Absolute magnitude | magnitude −3.75 |
| Spectral type | G2I |
| Surface temperature | 4,480 K |
| Luminosity | 5,040 L☉ |
| Radius | 118 R☉ |
| Mass | 10.4 M☉ (estimated) |
| Right ascension (J2000) | 15h 11m 16.0s |
| Declination (J2000) | −55° 20′ 46″ |
| Space velocity (relative to the Sun) | 31.3 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 35° N. South of latitude 35° S it never sets. 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 233 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 40 million years.
The Sun seen from there
From a planet around HIP 74305, the Sun would look like a star of magnitude 14.03, in the direction where our sky has the constellation Perseus. 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.