19 Vulpeculae

Star in the constellation Vulpecula J2000.0 Vulpecula 20 11 47.9738 26 48 32.374 5.40 K2 IIIa 1.40 −19.33 0.11 1.619 0.119 −10.600 0.122 1.9328 0.0779 −2.60 4.94 0.53 100.3 1.7 3.0 1.40 2889 145 commas 4,200 −0.01 < 3.4 19 Vul +26° 3825 192004 99518 7718 88330 19+Vulpeculae 19 Vulpeculae is star located approximately 1,690 light years from Earth in the northern constellation of Vulpecula. It is a probable member of the open cluster NGC 6882. This object is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 5.40. It is moving closer to the Earth with a heliocentric radial velocity of −19 km/s. This is an aging giant star with a stellar classification of K2 IIIa, having already consumed the hydrogen at its core and evolved away from the main sequence. It has nearly five times the mass of the Sun but has expanded to around 100 times the Sun's radius. The star is radiating 2,889 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,200 K. References Fernie J. D. New UBVRI photometry for 900 supergiants Astrophysical Journal Supplement Series 52 7 1983 1983ApJS...52....7F 10.1086/190856 free 1836489640252776576 Keenan Philip C. McNeil Raymond C. The Perkins catalog of revised MK types for the cooler stars Astrophysical Journal Supplement Series 71 245 1989 1989ApJS...71..245K 10.1086/191373 19 Vulpeculae 2018-11-18 1 Mermilliod J. C. Mayor M. Udry S. Red giants in open clusters. XIV. Mean radial velocities for 1309 stars and 166 open clusters Astronomy & Astrophysics 485 1 303–314 2008 10.1051/0004-6361:200809664 2008A&A...485..303M 1 Hohle M.M. Neuhäuser R. Schutz B.F. Masses and luminosities of O- and B-type stars and red supergiants Astronomische Nachrichten 331 4 349 2010 2010AN....331..349H 10.1002/asna.200911355 1003.2335 111387483 1 De Medeiros J. R. do Nascimento J. D. Jr. Sankarankutty S. Costa J. M. Maia M. R. G. Rotation and lithium in single giant stars Astronomy and Astrophysics 363 239–243 November 2000 2000A&A...363..239D astro-ph/0010273 Open Cluster Chemical Composition. I. Later Type Stars in Eight Clusters Luck R. Earle Astrophysical Journal Supplement 91 309 March 1994 10.1086/191940 1994ApJS...91..309L XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 1108.4971 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 119257644 External links Category:K-type giants Category:Vulpecula Category:Durchmusterung objects Vulpeculae, 19 192004 099518 7718