3 Monocerotis

{{Short description|Star in Monoceros constellation}}

{{Starbox begin

| name = 3 Monocerotis

}}

{{Starbox image

|image=

{{Location mark

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

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=3 Monocerotis

|x=770|y=590

}}

|caption=Location of 3 Monocerotis (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Monoceros

| ra = {{RA|06|01|50.42241}}{{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%2028574 Vizier catalog entry]

| dec = {{DEC|-10|35|52.5565}}

| appmag_v = {{nowrap|4.92{{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=28574 Vizier catalog entry] (4.98 + 8.25){{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 | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | s2cid=14878976 | postscript=. }}}}

}}

{{Starbox character

| class = B5 III{{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 = −0.12{{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=040967 Vizier catalog entry]

| u-b = −0.58

}}

{{Starbox astrometry

| radial_v = +39.00{{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}}

| absmag_v = −1.94

}}

{{Starbox astrometry|no_heading=y

| component1 = A

| radial_v =

| prop_mo_ra = {{val|-8.282}}

| prop_mo_dec = {{val|4.385}}

| parallax = 4.5717

| p_error = 0.3115

| parallax_footnote = {{cite DR2|2999076195652281856}}

| absmag_v =

}}

{{Starbox astrometry|no_heading=y

| component1 = B

| radial_v =

| prop_mo_ra = {{val|6.990}}

| prop_mo_dec = {{val|4.574}}

| parallax = 3.1006

| p_error = 0.0960

| parallax_footnote = {{cite DR2|2999076195649778816}}

| absmag_v =

}}

{{Starbox detail

| component1 = 3 Mon A

| mass = 5.85{{cite journal | bibcode=2010AN....331..349H | doi=10.1002/asna.200911355 | arxiv=1003.2335 | title=Masses and luminosities of O- and B-type stars and red supergiants | journal=Astronomische Nachrichten | volume=331 | issue=4 | pages=349 | year=2010 | last1=Hohle | first1=M.M. | last2=Neuhäuser | first2=R. | last3=Schutz | first3=B.F. | s2cid=111387483 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/AN/331/349/single&HIP=28574 Vizier catalog entry]

| radius = 4.5{{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 | issue=2 | pages=521–524 | date=February 2001 | doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 | s2cid=425754 }}

| temperature = 15,000

| luminosity = 1,105

| rotational_velocity = 45{{cite journal | bibcode=2002ApJ...573..359A | doi=10.1086/340590 | title=Rotational Velocities of B Stars | journal=The Astrophysical Journal | volume=573 | pages=359–365 | year=2002 | last1=Abt | first1=Helmut A. | last2=Levato | first2=Hugo | last3=Grosso | first3=Monica | issue=1 | doi-access=free }}

| metal_fe = 0.00{{cite journal | bibcode=2012AstL...38..771G | doi=10.1134/S1063773712120031 | arxiv=1606.08814 | title=Dependence of kinematics on the age of stars in the solar neighborhood | journal=Astronomy Letters | volume=38 | issue=12 | pages=771–782 | year=2012 | last1=Gontcharov | first1=G. A. | s2cid=118345778 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/PAZh/38/860/thin&HIP=28574 Vizier catalog entry]

}}

{{Starbox catalog

| names = {{odlist | F=3 Mon | BD=-10°1349 | HD=40967 | HIP=28574 | HR=2128 | SAO=151037 | CCDM=J06018-1036 | WDS=J06018-1036 | GC=7631 }}{{cite simbad | title=3 Mon | access-date=2019-04-12 }}

}}

{{Starbox reference

| Simbad = 3+Monocerotis

}}

{{Starbox end}}

3 Monocerotis is a binary star system in the equatorial constellation of Monoceros, located approximately 780 light years away from the Sun based on parallax. It is visible to the naked eye as a faint, blue-white hued star with a combined apparent visual magnitude of 4.92. The system is moving further from the Earth with a heliocentric radial velocity of +39 km/s.

The magnitude 4.98 primary, designated component A, has a stellar classification of B5 III, matching an evolved blue giant star. It has 5.85 times the mass of the Sun and is radiating 1,105 times the Sun's luminosity from its photosphere at an effective temperature of 15,000 K. The companion, component B, is magnitude 7.96 with an angular separation of {{Val|1.9|ul=arcsecond}} from the primary.{{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=06018-1036 Vizier catalog entry]