64 Arietis

{{Starbox begin

| name = 64 Arietis

}}

{{Starbox observe

| epoch = J2000

| ra = {{RA|03|24|18.47709}}

| dec = {{DEC|+24|43|26.7414}}

| appmag_v = +5.67

| constell = Aries

}}

{{Starbox character

| type = red giant branch

| class = K4 III

| b-v = {{Val|+1.190|0.015}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{val|+8.49|0.09}}

| prop_mo_ra = +13.781

| prop_mo_dec = –49.347

| parallax = 15.2059

| p_error = 0.1237

| parallax_footnote =

| absmag_v = 1.48

}}

{{Starbox detail

| mass = 1.27

| radius = 11

| luminosity = 42

| temperature = 4,426

| metal_fe = {{Val|+0.11|0.04}}

| gravity = 2.5

| rotational_velocity = 1.4

| age_gyr = 5.2

}}

{{Starbox catalog

| names = {{odlist | F=64 Ari | BD=+24°481 | HD=21017 | HIP=15861 | HR=1022 | SAO=75912 }}

}}

{{Starbox reference

| Simbad = 64+Ari

}}

64 Arietis is a possible binary star system in the northern constellation of Aries. 64 Arietis is the Flamsteed designation. It is faintly visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of +5.67. Based upon an annual parallax shift of {{val|15.2|ul=mas}}, this star is approximately {{Convert|214|ly|pc|abbr=off|lk=on}} distant from the Sun. It is receding from the Earth with a heliocentric radial velocity of +8.5 km/s.

The visible component is an aging giant star with a stellar classification of K4 III, currently on the red giant branch. It is around 5.2 billion years old with 1.27 times the mass of the Sun. With the supply of hydrogen at its core exhausted, the star has expanded to 11 times the radius of the Sun and it shines with 42 times the Sun's luminosity. This energy is being radiated from the outer envelope at an effective temperature of 4,426 K, giving it the orange-hued glow of a K-type star.

References

{{reflist|refs=

{{citation

| title=XHIP: An extended hipparcos compilation

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

| journal=Astronomy Letters | postscript=.

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

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

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

{{citation | display-authors=1 | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey | title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity | journal=The Astronomical Journal | volume=135 | issue=1 | pages=209–231 |date=January 2008 | doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | s2cid=121883397 | postscript=. | 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 | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 | postscript=. }}

{{citation

| last1=Hekker | first1=S. | last2=Meléndez | first2=J.

| title=Precise radial velocities of giant stars. III. Spectroscopic stellar parameters

| journal=Astronomy and Astrophysics

| volume=475 | issue=3 | pages=1003 | year=2007

| bibcode=2007A&A...475.1003H| arxiv=0709.1145

| doi=10.1051/0004-6361:20078233 | s2cid=10436552 | postscript=. }}

}}

External links

[http://aladin.u-strasbg.fr/AladinPreview?-c=03+24+18.4749%2B24+43+26.626&ident=*++64+Ari&submit=Aladin+previewer Aladin previewer]
[http://aladin.u-strasbg.fr/java/nph-aladin.pl?script=get+Aladin+*++64+Ari+11arcmin%3Bget+simbad+*++64+Ari+11arcmin&from=Simbad4&submit=Aladin+applet Aladin sky atlas]
[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%201022 HR 1022]

Category:K-type giants

Category:Astrometric binaries

Category:Aries (constellation)

Category:Durchmusterung objects