HD 189567#Planetary system

{{Starbox image

| image =

{{Location mark

|image=Pavo constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=8|mark_link=HD 189567

|x=402|y=350

}}

| caption = Location of HD 189567 (circled)

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Pavo

| ra = {{RA|20|05|32.76549}}

| dec = {{DEC|-67|19|15.2261}}

| appmag_v = 6.07

}}

{{Starbox character

| type = Main sequence

| class = G3V

| appmag_1_passband = U

| appmag_1 = 6.79

| appmag_2_passband = B

| appmag_2 = 6.71

| appmag_3_passband = V

| appmag_3 = 6.07

| appmag_4_passband = J

| appmag_4 = 5.108{{±|0.266}}

| appmag_5_passband = H

| appmag_5 = 4.724{{±|0.076}}

| appmag_6_passband = K

| appmag_6 = 4.511{{±|0.026}}

| variable =

}}

{{Starbox astrometry

| radial_v = {{val|−10.548|0.0003}}

| prop_mo_ra = {{val|845.252|0.016}}

| prop_mo_dec = {{val|−674.213|0.024}}

| pm_footnote =

| parallax = 55.7654

| p_error = 0.0245

| parallax_footnote =

| absmag_v = 4.75

}}

{{Starbox detail

| source =

| mass = {{val|0.83|0.01}}

| radius = 1.1

| luminosity = 2.11

| gravity = {{val|4.41|0.01}}

| temperature = 5,726{{±|15}}

| metal_fe = {{val|−0.24|0.01}}

| rotation = 38.8 days

| rotational_velocity = 2.0

| age_gyr = {{val|11.0|0.5|u=Gyr}}
{{val|7.23|2.99|u=Gyr}}
4.11

}}

{{Starbox catalog

| names = {{odlist | 2MASS = J20053286-6719156 | CD = −67 2385 | Ci 20 = 1180 | CPD = −67 3703 | GCRV = 12398 | GJ = 776 | GSC = 09098-01638 | HD = 189567 | HIP = 98959 | HR = 7644 | IRAS = 20006-6727 | LPM = 720 | LFT = 1512 | LHS = 484 | LTT = 7928 | NLTT = 48618 | PLX = 4738 | PM = 20006-6727 | PPM = 364390 | SAO = 254721 | TYC = 9098-1638-1 }}

}}

{{Starbox reference

| Simbad = HD+189567

}}

HD 189567 is a star with a pair of orbiting exoplanets, located in the southern constellation of Pavo. It is also known as Gliese 776, CD-67 2385, and HR 7644. The star has an apparent visual magnitude of 6.07, which is bright enough for it to be dimly visible to the naked eye. It lies at a distance of 58 light years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −10.5 km/s.

The spectrum of HD 189567 presents as an ordinary G-type main-sequence star with a stellar classification of G3V. It has 83% of the mass of the Sun but 110% of the Sun's radius. The star is moderately depleted in heavy elements, having 55% of the solar abundance of iron, but is less depleted in oxygen, having 80% of its solar abundance. It has a low level of magnetic activity in its chromosphere. Age estimates range from 4.11 Gyr based on chromospheric heating to 11.26 Gyr from stellar rotation. The star is radiating 2.1 times the luminosity of the Sun from its photosphere at an effective temperature of 5,726 K.

Planetary system

One exoplanet was discovered around the star in 2011, HD 189567 b. This exoplanet has an estimated minimum mass of 8.5 Earth masses, which means that it is most likely a mini-Neptune. It has an orbital period of 14.3 days, placing it well interior to the habitable zone of the star system. The planet's existence was confirmed in 2021, along with the discovery of a second planet, HD 189567 c.

{{Orbitbox planet begin

| table_ref =

}}

{{Orbitbox planet

| exoplanet = b

| mass_earth = {{val|8.5|0.6|p=≥}}

| semimajor = {{val|0.111|0.002}}

| period = {{val|14.288|0.002}}

| eccentricity = <0.189

}}

{{OrbitboxPlanet

| exoplanet = c

| mass_earth = {{val|7.0|0.9|p=≥}}

| semimajor = {{val|0.197|0.003}}

| period = {{val|33.688|0.025}}

| eccentricity = {{val|0.16|0.09}}

}}

References

{{Reflist|refs=

{{cite simbad

| title=HD 189567 | mode=cs2 | access-date=2 January 2021 }}

{{cite journal

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| title=XHIP: An extended hipparcos compilation

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | arxiv=1108.4971

| doi=10.1134/S1063773712050015 | s2cid=119257644 }}

{{cite journal

| title=Gaia Data Release 2. The catalogue of radial velocity standard stars

| last1=Soubiran | first1=C. | last2=Jasniewicz | first2=G.

| last3=Chemin | first3=L. | last4=Zurbach | first4=C.

| last5=Brouillet | first5=N. | last6=Panuzzo | first6=P.

| last7=Sartoretti | first7=P. | last8=Katz | first8=D.

| last9=Le Campion | first9=J. -F. | last10=Marchal | first10=O.

| last11=Hestroffer | first11=D. | last12=Thévenin | first12=F.

| last13=Crifo | first13=F. | last14=Udry | first14=S.

| last15=Cropper | first15=M. | last16=Seabroke | first16=G.

| last17=Viala | first17=Y. | last18=Benson | first18=K.

| last19=Blomme | first19=R. | last20=Jean-Antoine | first20=A.

| last21=Huckle | first21=H. | last22=Smith | first22=M.

| last23=Baker | first23=S. G. | last24=Damerdji | first24=Y.

| last25=Dolding | first25=C. | last26=Frémat | first26=Y.

| last27=Gosset | first27=E. | last28=Guerrier | first28=A.

| last29=Guy | first29=L. P. | last30=Haigron | first30=R.

| display-authors=1 | journal=Astronomy and Astrophysics

| volume=616 | pages=A7 | year=2018

| bibcode=2018A&A...616A...7S | arxiv=1804.09370

| doi=10.1051/0004-6361/201832795 | s2cid=52952408 }}

{{Cite encyclopedia

| title=HD 189567 b

| encyclopedia=Extrasolar Planets Encyclopaedia

| url=https://exoplanet.eu/catalog/hd_189567_b--973/

| access-date=2020-12-16 }}

{{cite journal

| title=High-precision abundances of elements in solar-type stars

| last1=Nissen | first1=P. E. | last2=Christensen-Dalsgaard | first2=J.

| last3=Mosumgaard | first3=J. R. | last4=Silva Aguirre | first4=V.

| last5=Spitoni | first5=E. | last6=Verma | first6=K.

| display-authors=1 | journal=Astronomy & Astrophysics

| volume=640 | pages=A81 | year=2020

| arxiv=2006.06013 | doi=10.1051/0004-6361/202038300

| s2cid=219573423 | bibcode=2020A&A...640A..81N }}

{{Cite web

| title=The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo

| url=http://phl.upr.edu/projects/habitable-exoplanets-catalog

| access-date=2020-12-16 | website=phl.upr.edu }}

{{cite journal

| title=The evolution of lithium in FGK dwarf stars

| display-authors=1 | last1=Llorente de Andrés | first1=F.

| last2=Chavero | first2=C. | last3=de la Reza | first3=R.

| last4=Roca-Fàbrega | first4=S. | last5=Cifuentes | first5=C.

| journal=Astronomy & Astrophysics

| date=October 2021 | volume = 654 | page = A137

| issn=0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/202141339

| bibcode=2021A&A...654A.137L | arxiv = 2108.05852 | doi-access = free }}

{{cite arXiv

| title=The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets

| last=Mayor | first=M. | display-authors=etal

| eprint=1109.2497 | class=astro-ph

| date=12 September 2011 }}

{{cite journal

| title=Faint solar analogues at the limit of no reddening

| display-authors=1 | last1=Giribaldi | first1=R. E.

| last2=Porto De Mello | first2=G. F. | last3=Lorenzo-Oliveira | first3=D.

| last4=Amôres | first4=E. B. | last5=Ubaldo-Melo | first5=M. L.

| journal=Astronomy & Astrophysics

| volume=629 | pages=A33 | year=2019

| arxiv=1907.00445 | doi=10.1051/0004-6361/201935901

| s2cid=195766778 }}

{{cite journal

| title=The HARPS search for southern extra-solar planets. XLVI. 12 super-Earths around the solar type stars HD 39194, HD 93385, HD 96700, HD 154088, and HD 189567

| journal=Astronomy & Astrophysics

| year=2021 | volume=654 | issue= | pages=A104

| doi=10.1051/0004-6361/202141351 | arxiv=2108.10198

| bibcode=2021A&A...654A.104U }}

{{cite web

| title=Finding the constellation which contains given sky coordinates

| author=Staff | date=2 August 2008 | work=DJM.cc

| url=http://djm.cc/constellation.html

| access-date=2 January 2021 }}

{{cite journal

| title=Chromospheric activity as age indicator. An L-shaped chromospheric-activity versus age diagram

| last1=Pace | first1=G.