Star in the constellation Cassiopeia
HR 244 is a single star in the constellation Cassiopeia . It has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 4.80. Based upon parallax measurements, it is located at a distance of 62 light years from the Sun, and is drifting further away with a radial velocity of +20.7 km/s; around 546,000 years ago it passed within 38 light-years of the Sun. The star has a relatively high proper motion , traversing the celestial sphere at the rate of 0.183 arcseconds per annum.
This object is an F-type star with a stellar classification of F9V. Despite the spectral class, evolutionary models show it to have left the main sequence and is now a subgiant . It is 5.3 billion years old and is spinning with a projected rotational velocity of 8 km/s. The star has 1.2 times the mass of the Sun and 1.8 times the Sun's radius . It is radiating 3.7 times the luminosity of the Sun from its photosphere at an effective temperature of 5,986 K .
References
^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties" . Astronomy and Astrophysics . 674 : A1. arXiv :2208.00211 . Bibcode :2023A&A...674A...1G . doi :10.1051/0004-6361/202243940 . S2CID 244398875 .
Gaia DR3 record for this source at VizieR .
^ Luck, R. Earle (January 2017), "Abundances in the Local Region II. F, G, and K Dwarfs and Subgiants", The Astronomical Journal , 153 (1): 19, arXiv :1611.02897 , Bibcode :2017AJ....153...21L , doi :10.3847/1538-3881/153/1/21 , S2CID 119511744 , 21.
^ Abt, Helmut A. (January 2009), "MK Classifications of Spectroscopic Binaries", The Astrophysical Journal Supplement , 180 (1): 117–118, Bibcode :2009ApJS..180..117A , doi :10.1088/0067-0049/180/1/117 , S2CID 122811461 .
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331, arXiv :1108.4971 , Bibcode :2012AstL...38..331A , doi :10.1134/S1063773712050015 , S2CID 119257644 .
^ Boyajian, Tabetha S.; et al. (July 2013), "Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations", The Astrophysical Journal , 771 (1): 40, arXiv :1306.2974 , Bibcode :2013ApJ...771...40B , doi :10.1088/0004-637X/771/1/40 , S2CID 14911430 .
"HD 5015" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2019-12-02.Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, arXiv :0806.2878 , Bibcode :2008MNRAS.389..869E , doi :10.1111/j.1365-2966.2008.13596.x , S2CID 14878976 .
Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal , 129 (3): 1483–1522, arXiv :astro-ph/0412070 , Bibcode :2005AJ....129.1483L , doi :10.1086/427854 , S2CID 2603568 .
Categories :
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
**DISCLAIMER** We are not affiliated with Wikipedia, and Cloudflare.
The information presented on this site is for general informational purposes only and does not constitute medical advice.
You should always have a personal consultation with a healthcare professional before making changes to your diet, medication, or exercise routine.
AI helps with the correspondence in our chat.
We participate in an affiliate program. If you buy something through a link, we may earn a commission 💕
↑
Category