43 Persei

{{Short description|Spectroscopic binary star system in the constellation Perseus}}

{{Starbox begin

| name = 43 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=43 Persei

|x=408|y=397

}}

|caption=Location of 43 Persei (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Perseus

| ra = {{RA|03|56|36.52069}}{{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%2018453 Vizier catalog entry]

| dec = {{DEC|+50|41|43.3646}}

| appmag_v = 5.28{{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=18453 Vizier catalog entry]

}}

{{Starbox character

| class = F5V{{cite journal | bibcode=2009ApJS..180..117A | doi=10.1088/0067-0049/180/1/117 | title=Mk Classifications of Spectroscopic Binaries | journal=The Astrophysical Journal Supplement Series | volume=180 | pages=117–118 | year=2009 | last1=Abt | first1=Helmut A. | issue=1 | s2cid=122811461 }}

| b-v = +0.41{{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=024546 Vizier catalog entry]

| u-b = +0.00

}}

{{Starbox astrometry

| radial_v = +39.10{{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 = +92.450

| prop_mo_dec = -129.755

| parallax = 26.0059

| p_error = 0.1271

| parallax_footnote = {{cite DR2|250437313946591360}}

| absmag_v = 2.23

}}

{{Starbox orbit

| reference = {{cite journal

| title=Improved Elements for the Hyades Group Binary 43 Persei

| last1=Wallerstein | first1=George

| journal=Publications of the Astronomical Society of the Pacific

| volume=85 | issue=503 | page=115 | date=February 1973

| doi=10.1086/129417 | bibcode=1973PASP...85..115W | doi-access=free }}

| period_unitless = 30.438 days

| axis_unitless = ≥ {{Convert|16|Gm|AU|abbr=on|lk=on}}

| eccentricity = 0.631

| periastron = {{Val|2440873.14|ul=JD|fmt=commas}}

| periarg = 27.07

| k1 = 51.85

| k2 = 54.40

}}

{{Starbox detail

| mass = 1.54{{cite journal | bibcode=1999A&A...352..555A | arxiv=astro-ph/9911002 | title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures | journal=Astronomy and Astrophysics | volume=352 | pages=555–562 | last1=Allende Prieto | first1=C. | last2=Lambert | first2=D. L. | year=1999 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/352/555/table1&Name=HIP18453 Vizier catalog entry]

| radius = 2.4

| temperature = 6,609{{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=18453 Vizier catalog entry]

| luminosity = 10.81

| rotational_velocity = 17{{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 }}

| gravity = 4.12

| metal_fe = 0.00

}}

{{Starbox catalog

| names = {{odlist | B=A Persei | F=43 Per | BD=+50°860 | GC=4728 | HD=24546 | HIP=18453 | HR=1210 | SAO=24314 | CCDM=J03566+5042AP | WDS=J03566+5042AD }}

}}

{{Starbox reference

| Simbad = 43+Persei

}}

{{Starbox end}}

43 Persei is a binary star{{cite journal | bibcode=2008MNRAS.389..869E | doi=10.1111/j.1365-2966.2008.13596.x | arxiv = 0806.2878 | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869 | year=2008 | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | doi-access=free | s2cid=14878976 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/MNRAS/389/869/table1&mHR=1210 Vizier catalog entry] system in the northern constellation Perseus. It is visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of 5.28. The system is located around {{convert|38.46|pc|ly|1|adj=ri1}} distant from the Sun, based on parallax.

This is a double-lined spectroscopic binary with an orbital period of 30.4 days and an eccentricity of 0.6. The primary component is an F-type main-sequence star with a stellar classification of F5V, a star that is fusing its core hydrogen. It has 1.54 times the mass of the Sun, 2.4 times the Sun's radius, and is spinning with a projected rotational velocity of {{cvt|17|km/s}}. The star shines 10.8 times brighter than the Sun at an effective temperature of {{cvt|6609|K}}.

There are distant companions B (separation 75.5" and magnitude 10.66), C (separation 85.6" and magnitude 12.18), and D (separation 68" and magnitude 13.43).{{cite journal | bibcode=2001AJ....122.3466M | doi=10.1086/323920 | title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog | journal=The Astronomical Journal | volume=122 | issue=6 | pages=3466 | year=2001 | last1=Mason | first1=Brian D. | last2=Wycoff | first2=Gary L. | last3=Hartkopf | first3=William I. | last4=Douglass | first4=Geoffrey G. | last5=Worley | first5=Charles E. | doi-access=free }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=B/wds/wds&WDS=03566%2B5042 Vizier catalog entry]