Star · G5 V
HD 219666
HD 219666 is a main-sequence star of spectral type G5 V in the constellation Tucana, 307.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Tucana |
|---|---|
| Distance | 307.0 light-years (94.1 pc) |
| Apparent magnitude | magnitude 9.90 |
| Absolute magnitude | magnitude 5.03 |
| Spectral type | G5 V |
| Surface temperature | 5,540 K |
| Luminosity | 0.938 L☉ |
| Radius | 1.06 R☉ |
| Mass | 1.02 M☉ |
| Age | 10.0 billion years |
| Metallicity [Fe/H] | 0.04 |
| Right ascension (J2000) | 23h 18m 13.6s |
| Declination (J2000) | −56° 54′ 14″ |
| Space velocity (relative to the Sun) | 141.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.90. Visible from the whole Southern Hemisphere and north to latitude 33° N. South of latitude 33° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1719. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.4 million years.
The Sun seen from there
From a planet around HD 219666, the Sun would look like a star of magnitude 9.70, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Planets
- HD 219666 b 6.03-day orbit · 4.9 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 115620 5.25 light-years
- HIP 114810 8.35 light-years
- HIP 114091 9.86 light-years
- HIP 116263 11.2 light-years
- HIP 116270 11.2 light-years
- HIP 115769 14.9 light-years
- HIP 113647 15.7 light-years
- HIP 116056 16.4 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.