16 Comae Berenices

Star in the constellation Coma Berenices J2000 12 26 59.29615 +26 49 32.5273 4.96 Coma Berenices main sequence A4 V +0.40 0.70 −11.456 −9.220 11.6745 0.2116 2.54 0.03 3.71 68.6 3.5 3.3 8299 57 58 commas 3.67 −0.3 80 310 16 Com +27°2134 2997 108382 60746 4738 82314 16+Com 16 Comae Berenices is a single star in the northern constellation of Coma Berenices. 16 Comae Berenices is the Flamsteed designation. It is a member of the Coma Star Cluster and is visible to the naked eye with an apparent visual magnitude of 4.96. Based upon an annual parallax shift of 11.7 mas, it is located about 279 light years away. This is a chemically-peculiar A-type main-sequence star with a stellar classification of A4 V. It displays an infrared excess, suggesting the presence of an orbiting debris disk at a mean distance of 18.2 AU with a temperature of 180 K. 16 Com has 2.54 times the mass of the Sun and 3.71 times the Sun's radius. The star is 310 million years old with a projected rotational velocity of 80 km/s. It is radiating 67 times the Sun's luminosity from its photosphere at an effective temperature of 8,299 K. References 16 Com 2019-01-05 4008867605880031872 Eggleton P. P. Tokovinin A. A. A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869–879 September 2008 10.1111/j.1365-2966.2008.13596.x free 2008MNRAS.389..869E 0806.2878 14878976 . Gebran M. Monier R. Richard O. 1 Chemical composition of A and F dwarf members of the Coma Berenices open cluster Astronomy and Astrophysics 479 1 February 2008 189–206 10.1051/0004-6361:20078807 . 2008A&A...479..189G 0712.0244 118369727 Gebran M. Farah W. Paletou F. Monier R. Watson V. 1 A new method for the inversion of atmospheric parameters of A/Am stars Astronomy & Astrophysics 589 A83 2016 10.1051/0004-6361/201528052 . 2016A&A...589A..83G 1603.01146 118549566 Zorec J. Royer F. Asplund Martin Cassisi Santi Ramirez Ivan Melendez Jorge Bensby Thomas Feltzing Sofia Rotational velocities of A-type stars. IV. Evolution of rotational velocities 1 Astronomy and Astrophysics 537 A120 2012 . 1201.2052 2012A&A...537A.120Z 10.1051/0004-6361/201117691 55586789 A Comprehensive Census of Nearby Infrared Excess Stars Cotten Tara H. Song Inseok The Astrophysical Journal Supplement Series 225 1 15 24 July 2016 10.3847/0067-0049/225/1/15 2016ApJS..225...15C 1606.01134 118438871 . free David 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 . de Bruijne J. H. J. Eilers A.-C. Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project Astronomy & Astrophysics 546 A61 14 October 2012 10.1051/0004-6361/201219219 2012A&A...546A..61D 1208.3048 59451347 . Category:A4V stars Category:Circumstellar disks Category:Coma Berenices Comae Berenices, 16 Category:Durchmusterung objects 108382 060746 4738