Star · A0V
HIP 40342
HIP 40342 is a main-sequence star of spectral type A0V in the constellation Cancer, 324.8 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 324.8 light-years (99.6 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude 1.48 |
| Spectral type | A0V |
| Surface temperature | 7,270 K |
| Luminosity | 21.9 L☉ |
| Radius | 2.95 R☉ |
| Mass | 2.2 M☉ (estimated) |
| Right ascension (J2000) | 8h 14m 11.1s |
| Declination (J2000) | +17° 40′ 33″ |
| Space velocity (relative to the Sun) | 7.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Northern Hemisphere and south to latitude 72° S. North of latitude 72° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1701. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.8 million years.
The Sun seen from there
From a planet around HIP 40342, the Sun would look like a star of magnitude 9.82, in the direction where our sky has the constellation Capricornus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 40733 7.66 light-years
- HIP 39812 10.9 light-years
- HIP 39749 17.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.