HN Peg is 59.1 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G0 V star; the first was found in 2006 by imaging (Spitzer Space Telescope).
Fly there in 3DHN Peg b was photographed directly: it is one of the few exoplanets seen as its own point of light rather than inferred from its star.
Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.
| Spectral type | G0 V |
| Surface temperature | 6,186 K |
| Mass | 1.08 solar masses |
| Radius | 1.00695 solar radii |
| Luminosity | 1.149 times the Sun |
| Apparent magnitude | 5.97707 |
| Age | about 0.3 billion years |
| Distance from the Sun | 59.1 light-years (18.1 parsecs) |
| Position (J2000) | RA 326.1316°, Dec 14.7715° |
| Constellation | Pegasus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HN Peg b | 20679.0 years from Kepler’s law | 773.000 AU | 11.777 R⊕ | 6991.6 M⊕ | Imaging, 2006 |
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.