Star · G5
Alasia
Alasia is a main-sequence star of spectral type G5 in the constellation Serpens, 136.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HD 168746 · HIP 90004 |
|---|---|
| Constellation | Serpens |
| Distance | 136.0 light-years (41.7 pc) |
| Apparent magnitude | magnitude 7.95 |
| Absolute magnitude | magnitude 4.85 |
| Spectral type | G5 |
| Surface temperature | 5,570 K |
| Luminosity | 1.1 L☉ |
| Radius | 1.09 R☉ |
| Mass | 1.07 M☉ |
| Age | 8.0 billion years |
| Metallicity [Fe/H] | -0.08 |
| Right ascension (J2000) | 18h 21m 49.8s |
| Declination (J2000) | −11° 55′ 21″ |
| Space velocity (relative to the Sun) | 29.2 km/s |
In the sky
Too faint for the naked eye (magnitude 7.95); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1890. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around Alasia, the Sun would look like a star of magnitude 7.93, in the direction where our sky has the constellation Orion. It would be invisible to the naked eye.
Planets
- HD 168746 b 6.4-day orbit · 11.1 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.