Star · F7IV
HIP 46840
HIP 46840 is a subgiant star of spectral type F7IV in the constellation Hydra, 413.4 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 413.4 light-years (126.7 pc) |
| Apparent magnitude | magnitude 6.11 |
| Absolute magnitude | magnitude 0.60 |
| Spectral type | F7IV |
| Surface temperature | 5,910 K |
| Luminosity | 52.4 L☉ |
| Radius | 6.9 R☉ |
| Mass | 2.81 M☉ (estimated) |
| Right ascension (J2000) | 9h 32m 41.4s |
| Declination (J2000) | +1° 51′ 51″ |
| Space velocity (relative to the Sun) | 31.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.11). Visible from the whole Northern Hemisphere and south to latitude 88° S. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1613. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.3 million years.
The Sun seen from there
From a planet around HIP 46840, the Sun would look like a star of magnitude 10.34, in the direction where our sky has the constellation Aquarius. 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.