24 Persei

{{Short description|Aging giant in the constellation Perseus}}

{{Starbox begin

| name = 24 Persei

}}

{{Starbox image

|image=

{{Location mark

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

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=24 Persei

|x=706|y=818

}}

|caption=Location of 24 Persei (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Perseus

| ra = {{RA|02|59|03.67639}}{{cite DR2|137319832555250816}}

| dec = {{DEC|35|10|59.2865}}

| appmag_v = 4.94{{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | 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. | s2cid=119257644 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=13905 Vizier catalog entry]

}}

{{Starbox character

| class = K2III{{cite journal | bibcode=1995yCat.5050....0H | title=VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) | journal=VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H | volume=5050 | last1=Hoffleit | first1=D. | last2=Warren | first2=W. H. | year=1995 }}

| b-v = +1.25{{cite journal | bibcode=2014JAVSO..42..443M | title=Sloan Magnitudes for the Brightest Stars | journal=The Journal of the American Association of Variable Star Observers | volume=42 | pages=443 | last1=Mallama | first1=A. | year=2014 | issue=2 }}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/other/JAVSO/42.443/ugriz&HD=018449 Vizier catalog entry]

| u-b = +1.28

}}

{{Starbox astrometry

| radial_v = −36.97{{cite journal | doi=10.1051/0004-6361:20041272 | bibcode=2005A&A...430..165F | arxiv=astro-ph/0409579 | title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data | journal=Astronomy & Astrophysics | volume=430 | pages=165–186 | year=2005 | last1=Famaey | first1=B. | last2=Jorissen | first2=A. | last3=Luri | first3=X. | last4=Mayor | first4=M. | last5=Udry | first5=S. | last6=Dejonghe | first6=H. | last7=Turon | first7=C. | s2cid=17804304 }}

| prop_mo_ra = −45.920

| prop_mo_dec = +5.632

| parallax = 9.6661

| p_error = 0.1963

| parallax_footnote =

| absmag_v = -0.32

}}

{{Starbox detail

| source = {{cite journal | arxiv=1412.4634 | bibcode=2015A&A...574A.116R | doi=10.1051/0004-6361/201322360 | title=Precise radial velocities of giant stars | journal=Astronomy & Astrophysics | volume=574 | pages=A116 | year=2015 | last1=Reffert | first1=Sabine | last2=Bergmann | first2=Christoph | last3=Quirrenbach | first3=Andreas | last4=Trifonov | first4=Trifon | last5=Künstler | first5=Andreas | hdl=10722/215277 | s2cid=59334290 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/574/A116&HIP=13905 Vizier catalog entry]

| mass = 1.59

| radius = 23.56

| temperature = 4,391

| luminosity = 185

| rotational_velocity = < 1.9{{cite journal | bibcode=1999A&AS..139..433D | doi=10.1051/aas:1999401 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy and Astrophysics Supplement Series | volume=139 | issue=3 | pages=433 | year=1999 | last1=De Medeiros | first1=J. R. | last2=Mayor | first2=M. | arxiv=astro-ph/0608248 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bAS/139/433/table5&Name=HD%2018449 Vizier catalog entry]

| gravity = 1.91

| metal_fe = −0.07

}}

{{Starbox catalog

| names = {{odlist | F=24 Per | BD=+34°550 | FK5=1082 | HD=18449 | HIP=13905 | HR=882 | SAO=56052 | GC=3575 }}{{cite simbad | title=24 Per | access-date=2019-03-29 }}

}}

{{Starbox reference

| Simbad = 24+Persei

}}

{{Starbox end}}

24 Persei is a star in the northern constellation of Perseus, located around 337 light years from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.94. The object is moving closer to the Earth with a heliocentric radial velocity of −37 km/s.

This is an aging giant star with a stellar classification of K2 III, which indicates it has exhausted the hydrogen at its core and evolved away from the main sequence. It has 1.59 times the mass of the Sun and has expanded to about 24 times the Sun's radius. The star is radiating 185 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,391 K.