18 Aurigae

Star in the constellation Auriga J2000 Auriga 05 19 23.75369 +33 59 07.3952 6.489The Tycho-2 catalogue of the 2.5 million brightest stars Høg, E. etal 2000 Astronomy and Astrophysics 355 L27–L30 2000A&A...355L..27H main sequence A7 V10.1086/110819 A study of the bright stars. I. A catalogue of spectral classifications The Astronomical Journal 74 375 1969 Cowley A. Cowley C. Jaschek M. Jaschek C. 1969AJ.....74..375C G 6.45 +0.256 0.007 +0.0910.1086/190359 The galactic distribution of interstellar absorption as determined from the Celescope catalog of ultraviolet stellar observations and a new catalog of UBV, H-beta photoelectric observations The Astrophysical Journal Supplement Series 30 97 1976 Deutschman W. A. Davis R. J. Schild R. E. 1976ApJS...30...97D free 6.55 0.55 +28.281 0.062 −12.715 0.044 13.8604 0.0527 182009826266321792 2.3124832 1.69 0.03Rotational velocities of A-type stars. IV. Evolution of rotational velocities Zorec J. Royer F. Asplund Martin Cassisi Santi Ramirez Ivan Melendez Jorge Bensby Thomas Feltzing Sofia 1 Astronomy and Astrophysics 537 A120 2012 2012A&A...537A.120Z 1201.2052 10.1051/0004-6361/201117691 free 55586789 1.92 0.12 0.03182009826266321792 10.091 0.063 7432 231 67 commas 4.26 0.14 124 950David Trevor J. Hillenbrand Lynne A. The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets The Astrophysical Journal 804 2 146 2015 2015ApJ...804..146D 10.1088/0004-637X/804/2/146 1501.03154 33401607 . 18 Aur 57893 6504 24832 1734 3893 +33°1010 34499 J05194+3359 182009826266321792 18 Aur 2026-02-14 18+Aur 18 Aurigae is a star located 235 light years away from the Sun in the northern constellation of Auriga. The brightness of this object is near the limit of visibility to the naked eye under good viewing conditions, appearing as a dim, white-hued star with an apparent visual magnitude of 6.49. The star is moving away from the Sun with a heliocentric radial velocity of 6.5 km/s. This is an ordinary A-type main-sequence star with a stellar classification of A7 V, which indicates it is generating energy by hydrogen fusion at its core. The object is 950 million years old with a high rate of spin, showing a projected rotational velocity of 124 km/s. It has 1.7 times the mass of the Sun and 1.9 times the Sun's radius. The star is radiating 10 times the luminosity of the Sun from its photosphere at an effective temperature of 7,432 K. 18 Aurigae has a magnitude 12.50 companion star at an angular separation of 3.90 arcsecond along a position angle of 167°, as of 2006.1 Mason B. D. Wycoff G. L. Hartkopf W. I. Douglass G. G. Worley C. E. The Washington Visual Double Star Catalog The Astronomical Journal 122 6 3466 2014 2001AJ....122.3466M 10.1086/323920 free References External links CCDM JJ05194+3359 HR 1734 Image 18 Aurigae Category:A-type main-sequence stars Category:Binary stars Category:Auriga Category:Durchmusterung objects Aurigae, 18 034499 024832 1734