Star · G8 IV
Hoggar
Hoggar is a giant star of spectral type G8 IV in the constellation Taurus, 607.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HD 28678 · HIP 21109 |
|---|---|
| Constellation | Taurus |
| Distance | 607.6 light-years (186.3 pc) |
| Apparent magnitude | magnitude 8.38 |
| Absolute magnitude | magnitude 2.03 |
| Spectral type | G8 IV |
| Surface temperature | 4,970 K |
| Luminosity | 22.9 L☉ |
| Radius | 6.48 R☉ |
| Mass | 1.53 M☉ |
| Age | 1.8 billion years |
| Metallicity [Fe/H] | -0.11 |
| Right ascension (J2000) | 4h 31m 25.5s |
| Declination (J2000) | +4° 34′ 31″ |
| Space velocity (relative to the Sun) | 62.3 km/s |
In the sky
Too faint for the naked eye (magnitude 8.38); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 85° S. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1418. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 11 million years.
The Sun seen from there
From a planet around Hoggar, the Sun would look like a star of magnitude 11.18, in the direction where our sky has the constellation Ophiuchus. It would be invisible to the naked eye.
Planets
- HD 28678 b 380-day orbit · 13.5 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.