HD 222095

{{Short description|Single A-type main sequence star in the constellation of Phoenix}}

{{Starbox image

| image =

{{Location mark

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

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=HD 222095

|x=745|y=283

}}

| caption = Location of HD 222095 (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Phoenix

| ra = {{RA|23|37|50.99418}}

| dec = {{DEC|-45|29|32.4672}}

| appmag_v = 4.74

}}

{{Starbox character

| type = main sequence

| class = A1/2V

| b-v = +0.08

| u-b = +0.09

| variable =

}}

{{Starbox astrometry

| radial_v = +3.40

| prop_mo_ra = +70.71

| prop_mo_dec = −12.66

| parallax = 16.29

| p_error = 0.22

| parallax_footnote =

| absmag_v = 0.80

}}

{{Starbox detail

| mass = 2.55

| radius = 2.2

| temperature = 9,230

| luminosity = 41.42

| rotational_velocity = 141

| gravity = 3.92

| metal_fe = −0.01

| age_myr = 482

}}

{{Starbox catalog

| names = {{odlist | CD=−46°14720 | FK5=889 | HD=222095 | HIP=116602 | HR=8959 | SAO=231707 | GC=32836 }}

}}

{{Starbox reference

| Simbad = HD+222095

}}

HD 222095 is a single star in the southern constellation of Phoenix, near the western constellation border with Grus. It has a white hue and is visible to the naked eye with an apparent visual magnitude of 4.74. The star is located at a distance of is approximately 200 light years based on parallax, and it is drifting further away with a radial velocity of +3.4 km/s.

This object is an A-type main-sequence star with a stellar classification of A1/2V. It has a high rate of spin with a projected rotational velocity of 141 to 165 km/s, giving it an equatorial bulge that is 4% larger than the polar radius. The star is 482 million years old with 2.55 times the mass of the Sun and around 2.2 times the Sun's radius. It is radiating 41 times the luminosity of the Sun from its photosphere at an effective temperature of 9,230 K. The chemical abundance of the star's outer atmosphere is similar to that in the Sun.

References

{{reflist|refs=

{{cite journal

| last1=van Belle | first1=Gerard T.

| title=Interferometric observations of rapidly rotating stars

| journal=The Astronomy and Astrophysics Review

| volume=20 | issue=1 | page=51 | date=March 2012

| bibcode=2012A&ARv..20...51V | arxiv=1204.2572

| doi=10.1007/s00159-012-0051-2 | s2cid=119273474

}}

{{cite journal

| title=A catalogue of multiplicity among bright stellar systems

| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869 | date=2008

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | arxiv=0806.2878

| bibcode=2008MNRAS.389..869E | s2cid=14878976 }}

{{cite book

| last1=Houk | first1=Nancy

| title=Michigan catalogue of two-dimensional spectral types for the HD stars

| volume=2 | location=Ann Arbor

| publisher=Dept. of Astronomy, University of Michigan

| year=1978 | bibcode=1978mcts.book.....H }}

{{cite journal

| title=Validation of the new Hipparcos reduction

| journal=Astronomy and Astrophysics

| volume=474 | issue=2 | pages=653–664 | year=2007

| last1=Van Leeuwen | first1=F.

| arxiv=0708.1752 | bibcode=2007A&A...474..653V

| doi=10.1051/0004-6361:20078357

| s2cid=18759600

}} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%20116602 Vizier catalog entry]

{{cite journal

| last=Ducati | first=J. R.

| title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system

| journal=CDS/ADC Collection of Electronic Catalogues

| volume=2237 | year=2002 | bibcode=2002yCat.2237....0D }}

{{cite journal

| title=XHIP: An extended hipparcos compilation

| journal=Astronomy Letters

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

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

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

| doi=10.1134/S1063773712050015

| s2cid=119257644

}} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=116602 Vizier catalog entry]

{{Cite journal

| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system

| journal=Astronomy Letters

| volume=32 | issue=11 | pages=759–771 | year=2006

| last=Gontcharov | first=G. A.

| bibcode=2006AstL...32..759G | arxiv=1606.08053

| doi=10.1134/S1063773706110065 | s2cid=119231169

}}

{{cite journal

| title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets

| journal=The Astrophysical Journal

| volume=804 | issue=2 | pages=146 | year=2015

| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A.

| bibcode=2015ApJ...804..146D | arxiv=1501.03154

| doi=10.1088/0004-637X/804/2/146

| s2cid=33401607

}} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/ApJ/804/146/table5&HIP=116602 Vizier catalog entry]

{{cite journal

| title=Dependence of kinematics on the age of stars in the solar neighborhood

| journal=Astronomy Letters

| volume=38 | issue=12 | pages=771–782 | year=2012

| last1=Gontcharov | first1=G. A.