HD 37124
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| Observation data Epoch J2000.0 |
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|---|---|
| Constellation | Taurus |
| Right ascension | 05h 37m 02.4864s |
| Declination | +20° 64' 50.836" |
| Apparent magnitude (V) | 7.68 |
| Distance | 108.3 ly (33.2 pc) |
| Spectral type | G4 IV-V |
| Other designations | |
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Gl 209, BD+20°1018, HIP 26381
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HD 37124 is a yellow dwarf star (spectral type G4 IV-V) in the constellation of Taurus. It is 108 light years from Earth and has three extrasolar planets.
Contents |
[edit] Planets
[edit] HD 37124 b
| Orbital elements | ||
|---|---|---|
| Semi-major axis | (a) | 0.53 AU |
| Eccentricity | (e) | 0.055 |
| Orbital period | (P) | 154.46 ± 0.369 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 140.5° |
| Time of periastron | (τ) | 2,450,000.11 JD |
| Physical characteristics | ||
| Mass | >0.61 MJ | |
| Radius | ? RJ | |
| Density | ? kg/m³ | |
| Temperature | ? K | |
| Discovery | ||
| Discovery date | 1999 | |
| Detection method(s) | Radial velocity | |
| Discoverer(s) | Marcy et al. | |
HD 37124 b is an extrasolar planet discovered in 2000 which orbits within the inside edge of the star's habitable zone, and would receive insolation similar to that of Venus. Based on its mass, it is most likely that this planet is a gas giant like Jupiter.
[edit] HD 37124 c
| Orbital elements | ||
|---|---|---|
| Semi-major axis | (a) | 1.64 AU |
| Eccentricity | (e) | 0.14 |
| Orbital period | (P) | 843.6 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 314.3° |
| Time of periastron | (τ) | 2,449,409.4 JD |
| Physical characteristics | ||
| Mass | >0.6 MJ | |
| Radius | ? RJ | |
| Density | ? kg/m³ | |
| Temperature | ? K | |
| Discovery | ||
| Discovery date | June 13, 2002 | |
| Detection method(s) | Radial velocity | |
| Discoverer(s) | Marcy et al. | |
HD 37124 c is an extrasolar planet discovered in 2002 which orbits just beyond the outer edge of its star's habitable zone, and would receive insolation similar to that of Mars. This planet is most likely a gas giant, based on its mass.
[edit] HD 37124 d
| Orbital elements | ||
|---|---|---|
| Semi-major axis | (a) | 3.19 AU |
| Eccentricity | (e) | 0.2 |
| Orbital period | (P) | 2295 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 266° |
| Time of periastron | (τ) | 2,449,606 JD |
| Physical characteristics | ||
| Mass | >0.66 MJ | |
| Radius | ? RJ | |
| Density | ? kg/m³ | |
| Temperature | ? K | |
| Discovery | ||
| Discovery date | 2005 | |
| Detection method(s) | Radial velocity | |
| Discoverer(s) | Marcy et al. | |
HD 37124 d is an extrasolar planet discovered in 2005 in a long-period orbit. Based on its mass, it is considered to be a gas giant. An alternative solution to the radial velocities gives a period of 29.92 days and a minimum mass 17% that of Jupiter.
[edit] See also
[edit] References
- Vogt et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal 536: 902-914.
- Butler et al. (2003). "Seven New Keck Planets Orbiting G and K Dwarfs". The Astrophysical Journal 582: 455-466.
- Vogt et al. (2005). "Five New Multicomponent Planetary Systems". The Astrophysical Journal 632: 638 – 658.
[edit] External links
- HD 37124. SIMBAD. Retrieved on 14 April 2006.
- Notes for star HD 37124. The Extrasolar Planets Encyclopaedia. Retrieved on 14 April 2006.
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