Beta Pictoris b
| Exoplanet | List of exoplanets | |
|---|---|---|
 |
||
| Parent star | ||
| Star | Beta Pictoris | |
| Constellation | Pictor | |
| Right ascension | (α) | 5h 47m 17.1s |
| Declination | (δ) | −51° 03′ 59″ |
| Apparent magnitude | (mV) | 3.861 |
| Distance | 63.4 ± 0.1 ly (19.44 ± .05 pc) |
|
| Spectral type | A6V | |
| Mass | (m) |
1.75+0.18 −0.17 M☉ |
| Radius | (r) | 1.8 R☉ |
| Temperature | (T) | 8052 K |
| Metallicity | [Fe/H] | 0.06 |
| Age | 0.012+0.008 −0.004 Gyr |
|
| Physical characteristics | ||
| Mass | (m) | 7+4 −3MJ |
| Radius | (r) | 1.65RJ |
| Stellar flux | (F⊙) | 0.119⊕ |
| Rotation period | (ω) | 8.1h |
| Temperature | (T) | 1,600 K (1,330 °C; 2,420 °F) |
| Orbital elements | ||
| Semi-major axis | (a) | 9.2 +0.4 −1.5 AU |
| Orbital period | (P) | 7890 ± 1000 d (21.6 ± 2.7 y) |
| Inclination | (i) | 89.01 ± 0.36° |
| Observed separation | ||
| Angular separation | (ρ) | 450 mas |
| Projected separation | (d) | 9AU |
| Discovery information | ||
| Discovery date | November 18, 2008 | |
| Discoverer(s) | Lagrange et al. | |
| Discovery method | Direct imaging | |
| Discovery site | Very Large Telescope | |
| Discovery status | Confirmed | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
Beta Pictoris b (also abbreviated as β Pic b) is an exoplanet orbiting the young debris disk A-type main sequence star Beta Pictoris located approximately 63 light-years (19.4 parsecs, or nearly 5.986214×1014 km) away from Earth in the constellation of Pictor. It has a mass around 7 Jupiter masses and a radius around 65% larger than Jupiter's. It orbits at 9 AU from Beta Pictoris (close to the plane of the debris disk orbiting the star) with a low eccentricity and a period of 20–21 years, and is the only known planet in the Beta Pictoris system.
Beta Pictoris b is a super-Jupiter, an exoplanet that has a radius and mass greater than that of the planet Jupiter. It has a temperature of 1,600 K (1,330 °C; 2,420 °F), most likely due to its dusty atmosphere and mass (normally it'd be much colder). It has a mass of around 7 MJ, and a radius of 1.65 RJ.
The planet orbits an (A-type) star named Beta Pictoris. The star has a mass of 1.75 M☉ and a radius of 1.8 R☉. It has a surface temperature of 8056 K and is 12 million years old. In comparison, the Sun is about 4.6 billion years old and has a surface temperature of 5778 K. It is slightly metal-rich, with a metallicity ([Fe/H]) of 0.06, or 112% of that found in the Sun. It's luminosity (L☉) is 8.7 times that of the Sun.
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