Star · F5
HD 143105
HD 143105 is a main-sequence star of spectral type F5 in the constellation Draco, 152.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 77838 |
|---|---|
| Constellation | Draco |
| Distance | 152.0 light-years (46.6 pc) |
| Apparent magnitude | magnitude 6.76 |
| Absolute magnitude | magnitude 3.42 |
| Spectral type | F5 |
| Surface temperature | 6,380 K |
| Luminosity | 3.59 L☉ |
| Radius | 1.65 R☉ |
| Mass | 1.51 M☉ |
| Metallicity [Fe/H] | 0.15 |
| Right ascension (J2000) | 15h 53m 36.6s |
| Declination (J2000) | +68° 43′ 12″ |
| Space velocity (relative to the Sun) | 17.3 km/s |
In the sky
Too faint for the naked eye (magnitude 6.76); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 21° S. North of latitude 21° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1874. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million years.
The Sun seen from there
From a planet around HD 143105, the Sun would look like a star of magnitude 8.17, in the direction where our sky has the constellation Hydrus. It would be invisible to the naked eye.
Planets
- HD 143105 b 2.2-day orbit · 13.7 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 79981 12.1 light-years
- HIP 75370 12.5 light-years
- GJ 9535 13.3 light-years
- 2MASS J15392137+6502364 14.6 light-years
- HIP 76256 15.0 light-years
- GJ 9532 15.1 light-years
- HIP 74092 15.2 light-years
- HIP 72726 16.9 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.