Beta Pavonis

{{Short description|Star in the constellation Pavo}}

{{Starbox begin

| name = β Pavonis

}}

{{Starbox image

|image=

{{Location mark

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

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=Beta Pavonis

|x=292|y=342

}}

|caption=Location of β Pavonis (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Pavo

| ra = {{RA|20|44|57.49399}}{{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | last1=Van Leeuwen | first1=F. | s2cid=18759600 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%20102395 Vizier catalog entry] {{Webarchive|url=https://web.archive.org/web/20210523140107/http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%20102395 |date=2021-05-23 }}

| dec = {{DEC|−66|12|11.5708}}

| appmag_v = 3.42{{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=102395 Vizier catalog entry] {{Webarchive|url=https://web.archive.org/web/20160920231603/http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V%2F137D%2FXHIP&HIP=102395 |date=2016-09-20 }}

}}

{{Starbox character

| class = A5 IV or A7 III

| b-v = +0.16{{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=197051 Vizier catalog entry] {{Webarchive|url=https://web.archive.org/web/20160920231600/http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J%2Fother%2FJAVSO%2F42.443%2Fugriz&HD=197051 |date=2016-09-20 }}

| u-b = +0.12

}}

{{Starbox astrometry

| radial_v = {{Val|+3.7|0.5}}{{Cite journal | doi = 10.1134/S1063773706110065 | bibcode=2006AstL...32..759G | title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system | journal=Astronomy Letters | volume=32 | issue=11 | pages=759–771 | year=2006 | last1=Gontcharov | first1=G. A. | arxiv=1606.08053 | s2cid=119231169 }}

| prop_mo_ra = −42.67

| prop_mo_dec = +9.94

| parallax = 24.14

| p_error = 0.16

| parallax_footnote =

| absmag_v = +0.33

}}

{{Starbox detail

| radius = 2.3{{cite journal | display-authors=1 | last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A. | title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) | edition=Third | journal=Astronomy and Astrophysics | volume=367 | pages=521–524 | date=February 2001 | doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 | s2cid=425754 }}

| mass = 2.51{{cite journal | arxiv=1201.2052 | bibcode=2012A&A...537A.120Z | doi=10.1051/0004-6361/201117691 | title=Rotational velocities of A-type stars | journal=Astronomy & Astrophysics | volume=537 | pages=A120 | year=2012 | last1=Zorec | first1=J. | last2=Royer | first2=F. | s2cid=55586789 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/537/A120/table1&HD=197051 Vizier catalog entry] {{Webarchive|url=https://web.archive.org/web/20160920234553/http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J%2FA%2BA%2F537%2FA120%2Ftable1&HD=197051 |date=2016-09-20 }}

| temperature = {{Val|8184|278|fmt=commas}}{{cite journal | bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146 | arxiv=1501.03154 | title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets | journal=The Astrophysical Journal | volume=804 | issue=2 | pages=146 | year=2015 | last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A. | s2cid=33401607 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/ApJ/804/146/table5&HIP=102395 Vizier catalog entry] {{Webarchive|url=https://web.archive.org/web/20220418042021/http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J%2FApJ%2F804%2F146%2Ftable5&HIP=102395 |date=2022-04-18 }}

| luminosity = 66

| rotational_velocity = 75

| gravity = 3.84

| age_myr = 305

}}

{{Starbox catalog

| names = {{odlist | B=β Pav | CPD=−66° 3501 | FK5=775 | HD=197051 | HIP=102395 | HR=7913 | SAO=254862 | GC=28862 }}

}}

{{Starbox reference

| Simbad = Beta+Pavonis

}}

{{Starbox end}}

Beta Pavonis, Latinised from β Pavonis, is a single, white-hued star in the southern constellation of Pavo. It can be seen with the naked eye, having an apparent visual magnitude of 3.42. Based upon an annual parallax shift of 24.14 mas as seen from Earth, it is located 135 light-years from the Sun. It is moving away from the Sun with a radial velocity of +4 km/s. Beta Pavonis is a member of the Ursa Major Moving Group, a set of stars that share a similar motion through space.

Zorec and Royer (2012) list a stellar classification for this star of A5 IV, indicating it is an evolving subgiant star that has consumed the hydrogen at its core and has begun to expand onto the red giant branch. However, Houk (1979) listed a more evolved class of A7 III, suggesting it is already a giant star. It has about 2.3 times the Sun's radius and 2.51 times the mass of the Sun. At the estimated age of 305 million years, the star still has a relatively high rate of spin, having a projected rotational velocity of 75 km/s. Beta Pavonis is radiating 66 times the Sun's luminosity from its photosphere at an effective temperature of about {{val|8184|ul=K|fmt=commas}}.