HD 189567

HD 189567
HD 189567
	Star
	; HD 189567 by the artist.
Observational data; ( Age J2000.0 )
Type of	Single star
Right ascension
Declination
Distance	57.7 St. years (17.7 pc )
Visible magnitude ( V )	6.08
Constellation	Peacock
Astrometry
Radial velocity ( R v )	-12.2 km / s
Own movement (μ)	RA: 844.50 ; Dec: -673.62
Parallax (π)	56.41 ± 0.91 mas
Absolute magnitude (V)	+4.84
Specifications
Spectral class	G2V
Color Index ( B - V )	0,02
physical characteristics
Age	7.99 billion years
Temperature	5700-5800 K
Metallicity	[Fe / H] = - 0.26
The properties	Analogue of the sun
Other designations
	HD 189567 , HIC 98959 , HIP 98959 , HR 7644 , LHS 484 , NLTT 48618 , PPM 364390 , SAO 254721 , 2MASS J20053286-6719156, CD -67 2385, CPD -67 3703, Ci 20 1180, GC 27793, GCRV 12398, GJ 776, GSC 09098-01638, LFT 1512, LPM 720, LTT 7928, PLX 4738, PM 20006-6727, SKY # 37754, SPOCS # 874, TD1 25847, TYC 9098-1638-1, UBV 17063, uvby98 100189567
Database Information
SIMBAD	data
	Sources:

HD 189567 is a star located in the constellation Peacock at a distance of about 57.7 light years from us. At least one planet orbits a star.

Content

Features

HD 189567 is a yellow dwarf of spectral class G, 6.08 visible magnitude; ^{[1] For the} first time in astronomical literature, it is mentioned in the catalog of Henry Draper , published at the beginning of the 20th century . The age of the star is estimated at approximately 7.99 billion years. ^[3] By its properties, this star is an analogue of the Sun.

Planet System

In 2011, a California group of astronomers working with the HARPS spectrograph announced the discovery ^{[4] of the} planet HD 189567 b in the system. It is a gas giant with a mass comparable to that of Neptune . It is drawn at a distance of 0.11 AU from the parent star, making a complete revolution in more than 14 days. The discovery of the planet was made by Doppler spectroscopy . The total observation time was 2818 days.

Planet	Weight ( M _J )	Radius ( R _J )	Circulation period ( days )	Semimajor axis orbits ( a.u. )	Eccentricity orbits
b	0,0316 ± 0,0034	-	14.275 ± 0.005	0.11 ± 0.002	0.23 ± 0.14

Notes

↑ ¹ ² ³ ⁴ Anna S Arnadottir, Sofia Feltzing, Ingemar Lundstrom. The ability of intermediate-band Stromgren photometry to correctly identify dwarf, subgiant, and giant stars and provide stellar metallicities and surface gravities . Arxiv.org (23 Aug 2010). Date of treatment March 7, 2013.
↑ ¹ ² ³ ⁴ ⁵ ⁶ SIMBAD (English) . - HD 189567 in the SIMBAD database . Date of treatment March 7, 2013.
↑ ¹ ² Ibukiyama, A .; Arimoto, N. HIPPARCOS age-metallicity relation of the solar neighborhood disc stars . Astronomy and Astrophysics, v. 394, p. 927-941 (2002) (11/2002). Date of treatment March 7, 2013. Archived March 27, 2012.
↑ M. Mayor, M. Marmier, C. Lovis, S. Udry, D. Ségransan, F. Pepe, W. Benz, J.-L. Bertaux, F. Bouchy, X. Dumusque, G. Lo Curto, C. Mordasini, D. Queloz, NC Santos. The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets . Arxiv.org (12 Sep 2011). Date of treatment March 7, 2013.

Links

[Arnadottir-1] ¹ ² ³ ⁴ Anna S Arnadottir, Sofia Feltzing, Ingemar Lundstrom. The ability of intermediate-band Stromgren photometry to correctly identify dwarf, subgiant, and giant stars and provide stellar metallicities and surface gravities . Arxiv.org (23 Aug 2010). Date of treatment March 7, 2013.

[simbad-2] ¹ ² ³ ⁴ ⁵ ⁶ SIMBAD (English) . - HD 189567 in the SIMBAD database . Date of treatment March 7, 2013.

[Ibukiyama-3] ¹ ² Ibukiyama, A .; Arimoto, N. HIPPARCOS age-metallicity relation of the solar neighborhood disc stars . Astronomy and Astrophysics, v. 394, p. 927-941 (2002) (11/2002). Date of treatment March 7, 2013. Archived March 27, 2012.

[4] M. Mayor, M. Marmier, C. Lovis, S. Udry, D. Ségransan, F. Pepe, W. Benz, J.-L. Bertaux, F. Bouchy, X. Dumusque, G. Lo Curto, C. Mordasini, D. Queloz, NC Santos. The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets . Arxiv.org (12 Sep 2011). Date of treatment March 7, 2013.