HR 244

{{Starbox observe

| epoch = J2000

| constell = Cassiopeia

| ra = {{RA|00|53|04.19644}}

| dec = {{DEC|+61|07|26.2993}}

| appmag_v = 4.80

}}

{{Starbox character

| type = subgiant

| class = F9V

| b-v = {{Val|0.540|0.008}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+20.68|0.12}}

| prop_mo_ra = –68.298

| prop_mo_dec = +169.435

| parallax = 52.9017

| p_error = 0.1037

| parallax_footnote =

| absmag_v = 3.44

}}

{{Starbox detail

| source =

| mass = 1.194

| radius = 1.77

| gravity = 0.53

| metal_fe = 0.04

| temperature = 5,986

| luminosity = 3.7

| rotational_velocity = 8.1

| age_gyr = 5.3

}}

{{Starbox catalog

| names = {{odlist | BD=+60°124 | GJ=41 | HD=5015 | HIP=4151 | HR=244 | SAO=11444 | WDS=J00531+6107A }}

}}

{{Starbox reference

| Simbad = HD+5015

}}

HR 244 is a single star in the constellation Cassiopeia. It has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 4.80. Based upon parallax measurements, it is located at a distance of {{val|62|ul=light years}} from the Sun, and is drifting further away with a radial velocity of {{val|+20.7|u=km/s}}; around {{val|546,000|u=years|fmt=commas}} ago it passed within {{Convert|11.60|pc|ly|0|disp=out|abbr=off}} of the Sun. The star has a relatively high proper motion, traversing the celestial sphere at the rate of {{Val|0.183|ul=arcseconds}} per annum.

This object is an F-type star with a stellar classification of F9V. Despite the spectral class, evolutionary models show it to have left the main sequence and is now a subgiant. It is 5.3 billion years old and is spinning with a projected rotational velocity of {{val|8|u=km/s}}. The star has 1.2 times the mass of the Sun and 1.8 times the Sun's radius. It is radiating 3.7 times the luminosity of the Sun from its photosphere at an effective temperature of {{val|5986|fmt=commas|ul=K}}.

References

{{reflist|refs=

{{citation |postscript=. |bibcode=2012AstL...38..331A |title=XHIP: An extended hipparcos compilation |last1=Anderson |first1=E. |last2=Francis |first2=Ch. |journal=Astronomy Letters |date=2012 |volume=38 |issue=5 |page=331 |doi=10.1134/S1063773712050015 |arxiv=1108.4971 }}

{{citation

| last1=Boyajian | first1=Tabetha S. | last2=von Braun | first2=Kaspar

| last3=van Belle | first3=Gerard | last4=Farrington | first4=Chris

| last5=Schaefer | first5=Gail | last6=Jones | first6=Jeremy

| last7=White | first7=Russel | last8=McAlister | first8=Harold A.

| last9=ten Brummelaar | first9=Theo A. | last10=Ridgway | first10=Stephen

| last11=Gies | first11=Douglas | last12=Sturmann | first12=Laszlo

| last13=Sturmann | first13=Judit | last14=Turner | first14=Nils H.

| last15=Goldfinger | first15=P. J. | last16=Vargas | first16=Norm

| title=Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations

| display-authors=1

| journal=The Astrophysical Journal

| volume=771 | issue=1 | page=40 | date=July 2013

| arxiv = 1306.2974 | doi = 10.1088/0004-637X/771/1/40

| bibcode = 2013ApJ...771...40B | s2cid=14911430 | postscript = . }}

{{citation

| last1=Abt | first1=Helmut A. | postscript=.

| title=MK Classifications of Spectroscopic Binaries

| journal=The Astrophysical Journal Supplement | volume=180 | issue=1

| pages=117–118 |date=January 2009

| doi=10.1088/0067-0049/180/1/117 | bibcode=2009ApJS..180..117A | s2cid=122811461 }}

{{citation

| title=Abundances in the Local Region II. F, G, and K Dwarfs and Subgiants

| last1=Luck | first1=R. Earle

| journal=The Astronomical Journal

| bibcode=2017AJ....153...21L | arxiv=1611.02897

| doi=10.3847/1538-3881/153/1/21 | s2cid=119511744 | 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 | arxiv=0806.2878

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

{{citation

| last1=Lépine | first1=Sébastien | last2=Shara | first2=Michael M.

| title=A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)

| journal=The Astronomical Journal

| volume=129 | issue=3 | pages=1483–1522 | date=March 2005

| doi=10.1086/427854 | bibcode=2005AJ....129.1483L

| arxiv=astro-ph/0412070 | s2cid=2603568 | postscript=. }}

{{citation

| title=XHIP: An extended hipparcos compilation

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

| journal=Astronomy Letters

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

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}

}}

Category:F-type main-sequence stars

Category:Cassiopeia (constellation)

Category:Durchmusterung objects