HD 49674
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 51m 30.51s [1] |
| Declination | +40° 52′ 03.9″ [1] |
| Apparent magnitude (V) | 8.1 |
| Characteristics | |
| Spectral type | G5V |
| B−V color index | 0.729 |
| Astrometry | |
| Radial velocity (Rv) | 11.8 ± 0.3 km/s |
| Proper motion (μ) | RA: 32.23 ± 0.97 [1] mas/yr Dec.: -122.70 ± 0.69 [1] mas/yr |
| Parallax (π) | 22.61 ± 0.87[1] mas |
| Distance | 144 ± 6 ly (44 ± 2 pc) |
| Absolute magnitude (MV) | 8.81 |
| Details | |
| Mass | 1.07 M☉ |
| Radius | 0.94 R☉ |
| Surface gravity (log g) | 4.560 [2] cgs |
| Temperature | 5482 K |
| Metallicity | 25 % |
| Age | 2.38 G years |
| Other designations | |
GSC 02946-00426, SAO 41390, uvby98 100049674, AG+40° 813, AGKR 6129, HIP 32916, SPOCS 324, BD+41° 1544, PPM Star Catalogue 49392, TYC 2946-426-1. | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HD 49674 is an 8th magnitude G-type main-sequence star (spectral type G5V) located approximately 144 light years away in the constellation of Auriga. It has a very similar mass to our Sun. It is orbited by a recently discovered planet.[3]
Planetary system
At the time of discovery of the planet HD 49674 b in 2002, it was the least massive planet known, very close to the boundary between sub-Jupiter mass and Neptune-mass at 0.1 MJ. This planet orbits very close to the star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >0.105 ± 0.011 MJ | 0.0580 ± 0.0034 | 4.94737 ± 0.00098 | 0.087 ± 0.095 | — | — |
See also
- List of extrasolar planets
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "HIP 32916". Hipparcos, the New Reduction. Retrieved 2010-03-14.
- ↑ 2.0 2.1 Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
- ↑ Butler, R. Paul et al. (2003). "Seven New Keck Planets Orbiting G and K Dwarfs". The Astrophysical Journal 582 (1): 455–466. Bibcode:2003ApJ...582..455B. doi:10.1086/344570.
External links
- "Notes for star HD 49674". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-23.
- "HD 49674". Extrasolar Visions. Retrieved 2008-08-23.
- HIP 32916 Catalog
- Image HD 49674
Coordinates: 
06h 51m 30.5164s, +40° 52′ 03.923″
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