HD 43197
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 06h 13m 35.6615s[1] |
| Declination | –29° 53′ 50.169″[1] |
| Apparent magnitude (V) | 8.95 |
| Characteristics | |
| Spectral type | G9IV/V |
| Apparent magnitude (B) | 9.75 |
| Apparent magnitude (J) | 7.658 |
| Apparent magnitude (H) | 7.328 |
| Apparent magnitude (K) | 7.203 |
| B−V color index | 0.80 |
| Astrometry | |
| Proper motion (μ) | RA: 148.65±1.10[1] mas/yr Dec.: 13.66±1.24[1] mas/yr |
| Parallax (π) | 17.76 ± 1.22[1] mas |
| Distance | 180 ± 10 ly (56 ± 4 pc) |
| Absolute magnitude (MV) | 5.25 |
| Details | |
| Mass | 0.81 M☉ |
| Radius | 1.08±0.19 R☉ |
| Luminosity | 0.755±0.206 L☉ |
| Surface gravity (log g) | 4.16 cgs |
| Temperature | 5200±100 K |
| Metallicity | 0.4 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 43197 is a 9th magnitude G-type main sequence or subgiant star located approximately 180 light years away in the constellation Canis Major. This star is larger, cooler, fainter, and less massive than our Sun. Also its metal content is five halves as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥ 0.60+0.12 −0.04 MJ |
0.92+0.01 −0.02 |
327.8±1.2 | 0.83+0.05 −0.01 |
— | — |
See also
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- 1 2 Naef, D.; et al. (2010). "The HARPS search for southern extrasolar planets XXIII. 8 planetary companions to low-activity solar-type stars". Astronomy and Astrophysics 523. A15. arXiv:1008.4600. Bibcode:2010A&A...523A..15N. doi:10.1051/0004-6361/200913616.
Coordinates: 
06h 13m 35.6615s, −29° 53′ 50.169″
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