51 Aurigae

{{Short description|K-type giant star in the constellation Auriga}}

{{Starbox observe

|epoch=J2000

|constell=Auriga

|ra={{RA|06|38|39.53667}}

|dec={{DEC|+39|23|27.0659}}

|appmag_v=5.696

}}

{{Starbox character

|class=K5III

|b-v=+1.34

|u-b=+1.56

}}

{{Starbox astrometry

|radial_v={{Val|31.98|0.15}}

|prop_mo_ra=−22.753

|prop_mo_dec=−108.896

|parallax=7.0332

|p_error=0.1300

|parallax_footnote=

|absmag_v=0.76

}}

{{Starbox detail

|mass={{Val|1.58|0.53}}

|radius={{Val|24.5|0.7}}

|temperature={{Val|4277|92|fmt=commas}}

|luminosity={{Val|178.0|3.9}}

|gravity={{Val|1.84|0.11}}

|metal_fe={{Val|0.01|0.05}}

|rotational_velocity=

|age_gyr=2.2

}}

{{Starbox catalog

|names={{odlist|F=51 Aur|BD=+39°1690|FK5=250|HD=47070|HIP=31771|HR=2419|SAO=59316}}

}}

{{Starbox reference

|Simbad=51+Aur

}}

51 Aurigae is a single star in the northern constellation of Auriga. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of about 5.70. Based on parallax, it is located some {{Convert|464|ly|pc|abbr=off}} away from the Sun. It is receding from the Earth with a heliocentric radial velocity of 32 km/s.

At 2.2 billion years old, 51 Aurigae has evolved off from the main sequence and is now a K-type giant star. It is 1.58 times as massive as the Sun, 24.5 times as wide, and 178 times as luminous. It emits radiation from its photosphere with an effective temperature of about 4,277 K.

References

{{reflist|refs=

{{cite journal|title=Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations|author=Kharchenko, N. V.|display-authors=etal|journal=Astronomische Nachrichten|volume=328|issue=9|page=889|date=2007|bibcode=2007AN....328..889K|doi=10.1002/asna.200710776|arxiv=0705.0878|s2cid=119323941}}

{{cite journal|author1=Mermilliod, J.-C.|title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)|journal=Catalogue of Eggen's UBV Data|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1|date=1986|bibcode=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

{{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|s2cid=121883397 |doi-access=free}}

{{cite journal|title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures|author1=Allende Prieto, C.|author2=Lambert, D. L.|journal=Astronomy and Astrophysics|volume=352|pages=555–562|date=1999|bibcode=1999A&A...352..555A|arxiv=astro-ph/9911002}}

{{cite journal|bibcode=2016ApJ...817...40F|doi=10.3847/0004-637X/817/1/40|arxiv=1511.04088|title=Determining Ages of APOGEE Giants with Known Distances|journal=The Astrophysical Journal|volume=817|pages=40|year=2016|last1=Feuillet|first1=Diane K.|last2=Bovy|first2=Jo|last3=Holtzman|first3=Jon|last4=Girardi|first4=Léo|last5=MacDonald|first5=Nick|last6=Majewski|first6=Steven R.|last7=Nidever|first7=David L.|issue=1|s2cid=118675933 |doi-access=free }}

{{cite journal|bibcode=2016MNRAS.456.3655M|doi=10.1093/mnras/stv2830|arxiv=1511.08203|title=Red giant masses and ages derived from carbon and nitrogen abundances|journal=Monthly Notices of the Royal Astronomical Society|volume=456|issue=4|pages=3655|year=2016|last1=Martig|first1=Marie|last2=Fouesneau|first2=Morgan|last3=Rix|first3=Hans-Walter|last4=Ness|first4=Melissa|last5=Mészáros|first5=Szabolcs|last6=García-Hernández|first6=D. A.|last7=Pinsonneault|first7=Marc|last8=Serenelli|first8=Aldo|last9=Aguirre|first9=Victor Silva|last10=Zamora|first10=Olga|doi-access=free }}

{{citation

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

| title=A catalogue of multiplicity among bright stellar systems

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

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

| bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}

}}

Category:K-type giants

Category:Auriga

Aurigae, 51

Category:Durchmusterung objects

047070

031771

2419