Star · G7 V
Uúba
Uúba is a main-sequence star of spectral type G7 V in the constellation Sculptor, 264.4 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | LTT 9779 · HIP 117883 |
|---|---|
| Constellation | Sculptor |
| Distance | 264.4 light-years (81.0 pc) |
| Apparent magnitude | magnitude 9.79 |
| Absolute magnitude | magnitude 5.25 |
| Spectral type | G7 V |
| Surface temperature | 5,440 K |
| Luminosity | 0.68 L☉ |
| Radius | 0.949 R☉ |
| Mass | 1.02 M☉ |
| Age | 2.0 billion years |
| Metallicity [Fe/H] | 0.27 |
| Right ascension (J2000) | 23h 54m 40.2s |
| Declination (J2000) | −37° 37′ 41″ |
| Space velocity (relative to the Sun) | 99.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.79. Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° 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 1762. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.7 million years.
The Sun seen from there
From a planet around Uúba, the Sun would look like a star of magnitude 9.37, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Planets
- LTT 9779 b 0.792-day orbit · 4.72 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 118266 17.6 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.