HR 858 is 104 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this F6 V star; the first was found in 2019 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DHR 858 b goes round its star every 3.59 days, 25 times as often as Mercury goes round the Sun.
HR 858 is one of 2 stars in its system. The position of the other star is not catalogued, so only HR 858 and its planets are drawn.
| Spectral type | F6 V |
| Surface temperature | 6,354 K |
| Mass | 1.204 solar masses |
| Radius | 1.258 solar radii |
| Luminosity | 2.31 times the Sun |
| Apparent magnitude | 6.38 |
| Age | about 2 billion years |
| Distance from the Sun | 104.3 light-years (32.0 parsecs) |
| Position (J2000) | RA 42.9850°, Dec -30.8141° |
| Constellation | Fornax |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HR 858 b | 3.59 days | 0.0489 AU | 2.004 R⊕ | 3.55 M⊕ | Transit, 2019 |
| HR 858 c | 5.97 days | 0.0687 AU | 1.979 R⊕ | 3.8 M⊕ | Transit, 2019 |
| HR 858 d | 11.2 days | 0.105 AU | 2.001 R⊕ | 7.1 M⊕ | Transit, 2019 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.