HD 125595
HD 125595 is a 9th magnitude K-type main sequence star located approximately 89 light years away in the constellation Centaurus. This star is smaller, cooler, dimmer, and less massive than our Sun. Also its metal content is 4% more than the Sun. In 2009, a gas giant planet was found in orbit around the star.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 21m 23.186s[1] |
| Declination | −40° 23′ 38.21″[1] |
| Apparent magnitude (V) | 9.03 |
| Characteristics | |
| Spectral type | K4V[2] |
| Apparent magnitude (B) | 10.13 |
| Apparent magnitude (J) | 7.097 |
| Apparent magnitude (H) | 6.608 |
| Apparent magnitude (K) | 6.447 |
| B−V color index | 1.10 |
| Astrometry | |
| Radial velocity (Rv) | 3.1 km/s |
| Proper motion (μ) | RA: −561.46 ± 1.05[1] mas/yr Dec.: −67.06 ± 0.85[1] mas/yr |
| Parallax (π) | 35.77 ± 1.04[1] mas |
| Distance | 91 ± 3 ly (28.0 ± 0.8 pc) |
| Absolute magnitude (MV) | 6.84 |
| Details | |
| Mass | 0.68 M☉ |
| Radius | 0.78 ± 0.07 R☉ |
| Luminosity | 0.239 ± 0.020 L☉ |
| Surface gravity (log g) | 4.29 cgs |
| Temperature | 4590 ± 100 K |
| Metallicity | 0.02 |
| Rotation | 37.2±2.0 d[2] |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
Planetary system
HD 125595 b is an extrasolar planet which orbits the star. This planet has at least 14 times the mass of Earth and takes 9 days and 16 hours to orbit the star at a semimajor axis of 0.081 AU.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.045 MJ | 0.0809 ± 0.0014 | 9.6737 ± 0.0039 | 0 | — | — |
See also
- List of extrasolar planets
References
- 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. S2CID 18759600.Vizier catalog entry
- Suárez Mascareño, A.; et al. (September 2015), "Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators", Monthly Notices of the Royal Astronomical Society, 452 (3): 2745–2756, arXiv:1506.08039, Bibcode:2015MNRAS.452.2745S, doi:10.1093/mnras/stv1441, S2CID 119181646.
- Ségransan, D.; et al. (2011). "The HARPS search for southern extra-solar planets. XXIX. Four new planets in orbit around the moderately active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849". Astronomy and Astrophysics. 535. A54. arXiv:1107.0339. Bibcode:2011A&A...535A..54S. doi:10.1051/0004-6361/200913580. S2CID 119197766.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.