HD 50499
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Puppis |
| Right ascension | 06h 52m 02s |
| Declination | -33º 54' 56″ |
| Apparent magnitude (V) | 7.221 |
| Absolute magnitude (V) | 3.849 |
| Distance | 154.14 ly (47.26 pc) |
| Spectral type | G1V |
| Other designations | |
|
HIP 32970
|
|
HD 50499 is a star in the constellation Puppis. The magnitude is 7, this star is too faint to be in naked eye visibility. The distance is located about 1.458 Em away from Earth. The star is hotter, larger, and more massive than our Sun. It is a hydrogen-fusing yellow star.
In 2005, a planet was found orbiting HD 50499. There is the possible second and third planets in the system, having masses of 1.7 and 2 MJ and periods of 6.8 and >10 years, respectively. The radial velocity had the trends of -4.8 m/s/yr.
Contents |
[edit] HD 50499 b
| Orbital elements | ||
|---|---|---|
| Semi-major axis a: | 3.84±0.04 AU | |
| Eccentricity e: | 0.25±0.20 | |
| Orbital period P: | 2458±38 d | |
| Inclination i: | ?° | |
| Angular distance θ: | 81.676 mas | |
| Longitude of periastron ω: |
259±36° | |
| Time of periastron τ: | 2451220±77 JD | |
| Semi-amplitude K: | 23.0±1.1 m/s | |
| Physical characteristics | ||
| Mass: | >1.72±0.03 MJ | |
| Radius: | ? RJ | |
| Density: | ? kg/m³ | |
| Gravity: | ? g | |
| Temperature: | ? K | |
| Discovery | ||
| Discovery date: | 2005 | |
| Discovery site: | United States | |
| Detection method(s): | radial velocity | |
| Discoverer(s): | Vogt, Butler, Marcy, and Fischer et al. |
|
| Other catalogue | ||
HD 50499 b is a jovian exoplanet with mass of 1.7 times Jupiter. It is a long period, taking 351 weeks to orbit the star. The planet’s eccentric orbit passes through the average distance of 574 Gm or 18.6 μpc.
The planet was discovered by four team members including Steve Vogt in 2005 using their radial velocity method, which used to measure changes in red- and blue-shifting of the star that indicate the presence of planets caused by gravitational tug. He also indicated the existence of two additional outer planets.
[edit] References
- Vogt et al. (2005). "Five New Multicomponent Planetary Systems". The Astrophysical Journal 632 (1): 638 – 658. doi:.
[edit] See also
[edit] External links
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