HD 189831

{{short description|Star in the constellation Sagittarius}}

{{Starbox begin

| name = HD 189831

}}

{{Starbox observe

| epoch = J2000

| constell = Sagittarius

| ra = {{RA|20|03|33.45912}}{{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%2098761 Vizier catalog entry]

| dec = {{DEC|-37|56|26.5236}}

| appmag_v = 4.77{{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=98761 Vizier catalog entry]

}}

{{Starbox character

| class = K5III{{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 = +1.41{{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=189831 Vizier catalog entry]

| u-b = +1.68

}}

{{Starbox astrometry

| radial_v = -38.30{{cite journal | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | journal=Carnegie Institute Washington D.C. Publication | publisher=Carnegie Institution for Science | bibcode=1953GCRV..C......0W | lccn=54001336 }}

| prop_mo_ra = +64.47

| prop_mo_dec = -86.43

| parallax = 8.90

| p_error = 0.29

| parallax_footnote =

| absmag_v = -0.48

}}

{{Starbox detail

| temperature = 4,099{{cite journal | bibcode=2016A&A...591A.118S | doi=10.1051/0004-6361/201628497 |arxiv=1605.07384 | title=The PASTEL catalogue: 2016 version | journal=Astronomy & Astrophysics | volume=591 | pages=A118 | year=2016 | last1=Soubiran | first1=Caroline | last2=Le Campion | first2=Jean-François | last3=Brouillet | first3=Nathalie | last4=Chemin | first4=Laurent | s2cid=119258214 }}

| luminosity = 316

| rotational_velocity = < 1.0{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | last1=De Medeiros | first1=J. R. | last2=Alves | first2=S. | last3=Udry | first3=S. | last4=Andersen | first4=J. | last5=Nordström | first5=B. | last6=Mayor | first6=M. | s2cid=54046583 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/561/A126/table1&HD=189831 Vizier catalog entry]

}}

{{Starbox catalog

| names = CD-38°13828, FK5 3602, GC 27779, GSC 07947-03890, HIP 98761, HR 7652, HD 189831, SAO 211767

}}

{{Starbox reference

| Simbad = HD+189831

}}

{{Starbox end}}

HD 189831 is a class K5III (orange giant) star in the constellation Sagittarius. Its apparent magnitude is 4.77 and it is approximately 366 light years away based on parallax.