Star · G
HD 307842
HD 307842 is a main-sequence star of spectral type G in the constellation Carina, 210.7 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Carina |
|---|---|
| Distance | 210.7 light-years (64.6 pc) |
| Apparent magnitude | magnitude 9.50 |
| Absolute magnitude | magnitude 5.45 |
| Spectral type | G |
| Surface temperature | 5,560 K |
| Luminosity | 0.645 L☉ |
| Radius | 0.907 R☉ |
| Mass | 0.91 M☉ |
| Metallicity [Fe/H] | -0.13 |
| Right ascension (J2000) | 10h 37m 21.9s |
| Declination (J2000) | −63° 39′ 18″ |
| Space velocity (relative to the Sun) | 49.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.50. Visible from the whole Southern Hemisphere and north to latitude 26° N. South of latitude 26° S it never sets. 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 1815. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around HD 307842, the Sun would look like a star of magnitude 8.88, in the direction where our sky has the constellation Cepheus. It would be invisible to the naked eye.
Planets
- TOI-784 b 2.8-day orbit · 1.93 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 51194 14.2 light-years
- HIP 50204 16.2 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.