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[1] mas |
| 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 |
| Extrasolar Planets Encyclopaedia | 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]
| 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
- 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: 
17h 19m 51.3992s, −48° 32′ 57.548″
This article is issued from Wikipedia - version of the 4/30/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.