HD 156411

HD 156411
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Ara
Right ascension	17h 19m 51.401s
Declination	–48° 32′ 57.54″
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 mas/yr ; Dec.: −209.35±0.29 mas/yr
Parallax (π)	18.25 ± 0.49 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
	CD–48°11605, HIP 84787, NLTT 44550, PPM 322823, SAO 227825
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 HD 156411 planetary system^[2]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥ 0.74+0.05 −0.04 $M$ _J	1.88+0.03 −0.04	842.2±14.5	0.22±0.08	—	—

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. 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.

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[van_Leeuwen2007-1] 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

[Naef2010-2] 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.

[1]

[2]

See also

References