51 Peg is 50.4 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G5V star; the first was found in 1995 by radial velocity (Haute-Provence Observatory).
Fly there in 3D51 Peg b goes round its star every 4.23 days, 21 times as often as Mercury goes round the Sun.
| Spectral type | G5V |
| Surface temperature | 5,761 K |
| Mass | 1.07 solar masses |
| Radius | 1.19 solar radii |
| Luminosity | 1.369 times the Sun |
| Apparent magnitude | 5.45309 |
| Age | about 10 billion years |
| Distance from the Sun | 50.4 light-years (15.5 parsecs) |
| Position (J2000) | RA 344.3675°, Dec 20.7691° |
| Constellation | Pegasus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| 51 Peg b | 4.23 days | 0.0520 AU | 14.1 R⊕ estimated | 193.88 M⊕ | Radial Velocity, 1995 |
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.