XO-4 is 889 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F5 V star; the first was found in 2010 by transit (Lowell Observatory).
Fly there in 3DXO-4 b goes round its star every 4.13 days, 21 times as often as Mercury goes round the Sun.
| Spectral type | F5 V |
| Surface temperature | 6,397 K |
| Mass | 1.1 solar masses |
| Radius | 1.45 solar radii |
| Luminosity | 3.432 times the Sun |
| Apparent magnitude | 10.814 |
| Age | about 2.1 billion years |
| Distance from the Sun | 889.3 light-years (272.7 parsecs) |
| Position (J2000) | RA 110.3880°, Dec 58.2681° |
| Constellation | Lynx |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| XO-4 b | 4.13 days | 0.0552 AU | 14.011 R⊕ | 451.32 M⊕ | Transit, 2010 |
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.