Star system in the constellation Reticulum
Kappa Reticuli
Location of κ Reticuli (circled)
Observation dataEpoch J2000.0 Equinox J2000.0 (ICRS )
Constellation
Reticulum
Right ascension
03 29 22.67724
Declination
−62° 56′ 15.0991″
Apparent magnitude (V)
+4.71 + 10.7
Characteristics
Spectral type
F3 V or F3 IV/V + M1
U−B color index
−0.04
B−V color index
+0.39
Astrometry Radial velocity (Rv )+12.5±0.4 km/s Proper motion (μ) RA: +382.84 mas /yr Dec.: +373.05 mas /yr Parallax (π)46.12 ± 0.13 mas Distance 70.7 ± 0.2 ly (21.68 ± 0.06 pc ) Absolute magnitude (MV )+2.98
Details κ Ret A Mass 1.32 M ☉ Radius 1.1 R ☉ Surface gravity (log g )4.31 cgs Temperature 6,796±231 K Metallicity −0.07 dex Rotational velocity (v sin i )13.5±0.7 km/s Age 848 Myr κ Ret B Mass 0.54 M ☉ Radius 0.50 R ☉ Luminosity 0.043 L ☉ Temperature 3,733 K
Other designations κ Ret , 4 Ret , CD −63° 112, FK5 126, HD 22001, HIP 16245, HR 1083, SAO 248819, WDS J03294-6256A
Database references SIMBAD data
Kappa Reticuli (κ Reticuli ) is a binary star system in the southern constellation of Reticulum . It is visible to the naked eye, having a combined apparent visual magnitude of +4.71. Based upon an annual parallax shift of 46.12 mas as seen from Earth, it is located 71 light-years from the Sun . Based upon its space velocity components, this star is a member of the Hyades supercluster of stars that share a common motion through space.
Houk and Cowley (1978) catalogued the yellow-hued primary, component A, with a stellar classification of F3 IV/V, indicating this is an F-type star that showing mixed traits of a main-sequence and a more evolved subgiant star. Later, Grey et al. (2006) listed a class of F3 V, suggesting it is an F-type main-sequence star . It is emitting a statistically significant amount of infrared excess , suggesting the presence of an orbiting debris disk . The secondary, component B, is an orange-hued star with a visual magnitude of 10.4 at an angular separation of 54 arcseconds from the primary.
References
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Reiners, Ansgar (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", Astronomy and Astrophysics , 446 (1): 267–277, arXiv :astro-ph/0509399 , Bibcode :2006A&A...446..267R , doi :10.1051/0004-6361:20053911 , S2CID 8642707
^ David, Trevor J.; Hillenbrand, Lynne A. (2015), "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, arXiv :1501.03154 , Bibcode :2015ApJ...804..146D , doi :10.1088/0004-637X/804/2/146 , S2CID 33401607 .
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Casagrande, L.; et al. (2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy & Astrophysics , 530 (A138): 21, arXiv :1103.4651 , Bibcode :2011A&A...530A.138C , doi :10.1051/0004-6361/201016276 , S2CID 56118016 .
Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics , 542 : A116, arXiv :1204.2459 , Bibcode :2012A&A...542A.116A , doi :10.1051/0004-6361/201118724 , S2CID 53666672 .
"kap Ret" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2017-07-14.{{cite web }}
: CS1 maint: postscript (link )
Montes, D.; et al. (November 2001), "Late-type members of young stellar kinematic groups - I. Single stars", Monthly Notices of the Royal Astronomical Society , 328 (1): 45–63, arXiv :astro-ph/0106537 , Bibcode :2001MNRAS.328...45M , doi :10.1046/j.1365-8711.2001.04781.x , S2CID 55727428 .
^ Streicher, Magda (December 2009), "Reticulum: The Celestial Crosshairs", Monthly Notes of the Astronomical Society of South Africa , 68 (11–12): 242–246, Bibcode :2009MNSSA..68..242S .
Gáspár, András; et al. (May 2013), "The Collisional Evolution of Debris Disks", The Astrophysical Journal , 768 (1): 29, arXiv :1211.1415 , Bibcode :2013ApJ...768...25G , doi :10.1088/0004-637X/768/1/25 , S2CID 119295265 , 25.
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