1 Canis Minoris

Star in the constellation Canis Minor Canis Minor constellation map.svg center 280 right Red circle.svg 10 1 Canis Minoris 542 512 Location of 1 Canis Minoris (circled in red) J2000.0 (ICRS) Canis Minor 07 24 58.18002 +11 40 10.2825 5.37 main sequence A5 IV or A4 V 0.105 0.006 −1.0 4.2 −15.574 −15.478 10.9796 0.0959 0.44 2.02 3.28 44 8,222 3.71 159 716 1 CMi +11°1578 58187 35987 2820 96871 9891 1+CMi 1 Canis Minoris is a single star in the equatorial constellation of Canis Minor, located about 287 light years away from the Sun. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.37. The radial velocity of this object is poorly constrained at −1.0 4.2 km/s. Cowley et al. (1969) listed a stellar classification of A5 IV for 1 Canis Minoris, matching an A-type subgiant star that has exhausted the hydrogen at its core and is evolving into a giant. However, Gray and Garrison (1989) catalogued it as an A-type main-sequence star with a class of A4 V. The Hipparcos team used a class of A3 Vn, where the 'n' indicates "nebulous" lines due to rapid rotation. This star is estimated to be 716 million years old and is at or near the end of its main sequence lifetime. It has a high rate of spin, showing a projected rotational velocity of 159 km/s. The star has more than double the mass of the Sun with about 3.3 times the Sun's radius. It is radiating 44 times the Sun's luminosity from its photosphere at an effective temperature of commas 8222 K. References 3162769115973745920 1 CMi 2019-04-01 Stassun Keivan G. Oelkers Ryan J. Paegert Martin Torres Guillermo Pepper Joshua De Lee Nathan Collins Kevin Latham David W. Muirhead Philip S. Chittidi Jay Rojas-Ayala Bárbara Fleming Scott W. Rose Mark E. Tenenbaum Peter Ting Eric B. Kane Stephen R. Barclay Thomas Bean Jacob L. Brassuer C. E. Charbonneau David Ge Jian Lissauer Jack J. Mann Andrew W. McLean Brian Mullally Susan Narita Norio Plavchan Peter Ricker George R. Sasselov Dimitar Seager S. 1 The Revised TESS Input Catalog and Candidate Target List The Astronomical Journal 2019 158 4 138 10.3847/1538-3881/ab3467 free 1905.10694 2019AJ....158..138S The Late A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation Gray R. O. Garrison R. F. Astrophysical Journal Supplement 70 623 July 1989 . 10.1086/191349 1989ApJS...70..623G 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 . Rotational velocities of A-type stars. IV. Evolution of rotational velocities Zorec J. Royer F. Astronomy & Astrophysics 537 A120 2012 2012A&A...537A.120Z 10.1051/0004-6361/201117691 1201.2052 55586789 . 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 XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 1108.4971 119257644 . . Cowley A. Cowley C. Jaschek M. Jaschek C. A study of the bright A stars. I. A catalogue of spectral classifications 1 Astronomical Journal 74 375–406 April 1969 10.1086/110819 1969AJ.....74..375C Category:A-type main-sequence stars Category:Canis Minor BD+11 1578 Canis Minoris, 01 058187 035987 2820