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Rho Coronae Borealis
A star similar to the Sun but of greater age, around which has been found a planet marginally more massive than Jupiter. This epistellar Jovian, the fourth of its type to be discovered, occupies a nearly circular, sub-Mercurian orbit around its host.
| Host star | |
|---|---|
| Distance | 55 light-years (16.7 pc) |
| Spectral type | G0 V or G2 V |
| Temperature | 5,480 °C (5,750 K) |
| Luminosity (Sun = 1) | 1.8 |
| Mass (Sun = 1) | 0.89 |
| Apparent magnitude | 5.4 |
| Planet | |
|---|---|
| Mass (Jupiter = 1) | 1.13 |
| Semi-major axis | 0.25 AU (37.5 million km, 23.3 million mi.) |
| Orbital period | 39.65 days |
| Eccentricity | 0.028 |
| Year of discovery | 1997 |
| Discoverer | Robert Noyes et al (AFOE) |
| Method of discovery | radial velocity |
Reference
- Noyes, R., et al. "A Planet Orbiting the Star Rho Coronae Borealis," Astrophysical Journal, 483, 111 (1997).
Related categories
• NOTABLE STARS
• EXTRASOLAR PLANETS
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