Star · G5 III/IV
HD 1397
HD 1397 is a main-sequence star of spectral type G5 III/IV in the constellation Tucana, 261.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 1419 |
|---|---|
| Constellation | Tucana |
| Distance | 261.1 light-years (80.0 pc) |
| Apparent magnitude | magnitude 7.79 |
| Absolute magnitude | magnitude 3.27 |
| Spectral type | G5 III/IV |
| Surface temperature | 5,520 K |
| Luminosity | 4.57 L☉ |
| Radius | 2.34 R☉ |
| Mass | 1.32 M☉ |
| Age | 4.5 billion years |
| Metallicity [Fe/H] | 0.29 |
| Right ascension (J2000) | 0h 17m 47.1s |
| Declination (J2000) | −66° 21′ 32″ |
| Space velocity (relative to the Sun) | 39.3 km/s |
In the sky
Too faint for the naked eye (magnitude 7.79); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 24° N. South of latitude 24° 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 1765. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.6 million years.
The Sun seen from there
From a planet around HD 1397, the Sun would look like a star of magnitude 9.35, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Planets
- HD 1397 b 11.5-day orbit · 11.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 1572 12.6 light-years
- HIP 1258 13.1 light-years
- HIP 494 16.4 light-years
- HIP 2111 16.8 light-years
- HIP 1394 17.4 light-years
- HIP 118179 18.0 light-years
- HIP 1672 19.9 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.