89 Virginis

{{Short description|Single, evolved giant star in the constellation Virgo}}

{{Starbox begin|name=89 Virginis}}

{{Starbox observe

|epoch=J2000

|constell=Virgo

|ra={{RA|13|49|52.28340}}{{cite DR2|6294168164474202112}}

|dec={{DEC|-18|08|03.0103}}

|appmag_v=4.959{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}}

}}

{{Starbox character

|class=K0III{{cite journal|bibcode=1999MSS...C05....0H|title=Michigan catalogue of two-dimensional spectral types for the HD Stars|journal=Michigan Spectral Survey|volume=5|pages=0|author1=Houk, N.|author2=Swift, C.|year=1999}}

|b-v=+1.06{{cite journal|author1=Mermilliod, J.-C.|title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)|journal=Catalogue of Eggen's UBV Data|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1|date=1986|bibcode= 1986EgUBV........0M}}

|u-b=+0.86

}}

{{Starbox astrometry

|radial_v={{Val|−39.45|0.17}}

|prop_mo_ra=−101.100

|prop_mo_dec=−38.200

|parallax=13.9184

|p_error=0.2053

|parallax_footnote=

|absmag_v=0.618{{citation | postscript=.

| display-authors=1 | last1=Liu | first1=Y. J.

| last2=Zhao | first2=G. | last3=Shi | first3=J. R.

| last4=Pietrzyński | first4=G. | last5=Gieren | first5=W.

| title=The abundances of nearby red clump giants

| journal=Monthly Notices of the Royal Astronomical Society

| volume=382 | issue=2 | pages=553–66 | date=2007

| bibcode=2007MNRAS.382..553L | doi=10.1111/j.1365-2966.2007.11852.x | doi-access=free }}

}}

{{Starbox detail

|source=

|mass=1.70{{cite journal|bibcode=2015AJ....150...88L|doi=10.1088/0004-6256/150/3/88|arxiv=1507.01466|title=Abundances in the Local Region. I. G and K Giants|journal=The Astronomical Journal|volume=150|issue=3|pages=88|year=2015|last1=Luck|first1=R. Earle|s2cid=118505114}}

|radius=12{{cite journal|bibcode=2008AJ....135..209M|doi=10.1088/0004-6256/135/1/209|title=Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity|journal=The Astronomical Journal|volume=135|pages=209–231|year=2008|last1=Massarotti|first1=Alessandro|last2=Latham|first2=David W.|last3=Stefanik|first3=Robert P.|last4=Fogel|first4=Jeffrey|issue=1|doi-access=free}}

|temperature={{Val|4706|13|fmt=commas}}

|luminosity=69

|gravity=2.6

|metal_fe=−0.03

|rotational_velocity=

|age_gyr=3.40

}}

{{Starbox catalog

|names={{odlist|B=89 Vir|BD=-17°3937|GJ=9460|HD=120452|HIP=67494|HR=5196|SAO=158186}}{{cite simbad | title=89 Vir | access-date=2019-02-09 }}

}}

{{Starbox reference

|Simbad=89+Vir

}}

{{Starbox end}}

89 Virginis is a single star in the zodiac constellation of Virgo, located 234 light years from the Sun. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 4.959. The star is moving closer to the Earth with a heliocentric radial velocity of −39 km/s.

This is an evolved giant star with a stellar classification of K0 III, having exhausted the hydrogen at its core and expanded away from the main sequence. It is a red clump star, which indicates it is generating energy through helium fusion at its core. This object is 3.4 billion years old with 1.7 times the mass of the Sun and 12 times the Sun's radius. It is radiating 69 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4706 K.