HD 156411
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 19m 51.401s[1] |
| Declination | –48° 32′ 57.54″[1] |
| Apparent magnitude (V) | 6.67 |
| Characteristics | |
| Spectral type | G1Vw |
| Apparent magnitude (B) | 7.29 |
| Apparent magnitude (J) | 5.563 |
| Apparent magnitude (H) | 5.241 |
| Apparent magnitude (K) | 5.170 |
| B−V color index | 0.62 |
| Astrometry | |
| Radial velocity (Rv) | –39.1 km/s |
| Proper motion (μ) | RA: −33.71±0.59[1] mas/yr Dec.: −209.35±0.29[1] mas/yr |
| Parallax (π) | 18.25 ± 0.49 mas[1] |
| Distance | 179 ± 5 ly (55 ± 1 pc) |
| Absolute magnitude (MV) | 2.96 |
| Details | |
| Mass | 1.11 M☉ |
| Radius | 2.23±0.19 R☉ |
| Luminosity | 5.317±0.551 L☉ |
| Surface gravity (log g) | 3.83 cgs |
| Temperature | 5890±100 K |
| Metallicity | -0.12 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 156411 is a 7th magnitude G-type main sequence star located approximately 179 light years away in the constellation Ara. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content is three-fourths as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.[2]
The star HD 156411 is named Inquill. The name was selected in the NameExoWorlds campaign by Peru, during the 100th anniversary of the IAU. Inquil was one half of the couple involved in the tragic love story Way to the Sun by Abraham Valdelomar.[3][4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥ 0.74+0.05 −0.04 MJ |
1.88+0.03 −0.04 |
842.2±14.5 | 0.22±0.08 | — | — |
See also
References
- ^ a b c d e 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
- ^ a b 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. S2CID 118845989.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
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