- DX Cancri
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DX Cancri Observation data
Epoch J2000 Equinox J2000Constellation Cancer Right ascension 08h 29m 49.345s[1] Declination +26° 46′ 33.74″[1] Apparent magnitude (V) 14.81[2] Characteristics Spectral type M6.5V[3] U−B color index +2.11[4] B−V color index +2.08[4] Variable type Flare star[2] Astrometry Radial velocity (Rv) +9.0[5] km/s Proper motion (μ) RA: –1140[1] mas/yr
Dec.: –602[1] mas/yrParallax (π) 275.80 ± 3.00[6] mas Distance 11.8 ± 0.1 ly
(3.63 ± 0.04 pc)Absolute magnitude (MV) 16.98[7] Details Mass 0.09[7] M☉ Radius 0.4[citation needed] R☉ Luminosity 0.04[citation needed] L☉ Temperature 2,840[8] K Rotational velocity (v sin i) 11.0[9] km/s Other designations Gl 051-015, GCTP 2016.01, LHS 248, GJ 1111.[2]DX Cancri is a red dwarf star that is about 9% of the mass of our Sun.[7] It is a flare star that has intermittent changes in brightness by up to a fivefold increase.
DX Cancri is far too faint to be seen with the naked eye, even though it is the 18th closest star system to the Sun at a distance of 11.8 light years. It is the closest star in the constellation Cancer.
See also
References
- ^ a b c d Zacharias, N.; et al. (2003). The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2). CDS/ADC Collection of Electronic Catalogues, 1289, 0 (2003). http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2003yCat.1289....0Z&db_key=AST&nosetcookie=1. Retrieved 2010-06-29.
- ^ a b c "V* DX Cnc -- Flare Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=DX+Cancri. Retrieved 2010-06-29.
- ^ Luhman, K. L.; et al. (April 2007). "Ophiuchus 1622-2405: Not a Planetary-Mass Binary". The Astrophysical Journal 659 (2): 1629–1636. arXiv:astro-ph/0701242. Bibcode 2007ApJ...659.1629L. doi:10.1086/512539.
- ^ a b Weistrop, D. (August 1981). "The nature of the Giclas +4 stars". Astronomical Journal 86: 1220–1227. Bibcode 1981AJ.....86.1220W. doi:10.1086/113001.
- ^ 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.
- ^ van Altena, W. F.; Lee, J. T.; Hoffleit, E. D. (1995). The general catalogue of trigonometric [stellar] parallaxes (4th ed.). New Haven, CT: Yale University Observatory. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1995GCTP..C......0V. Retrieved 2010-06-29.
- ^ a b c "The One Hundred Nearest Star Systems". RECONS. Georgia State University. January 1, 2009. http://www.chara.gsu.edu/~thenry/RECONS/TOP100.posted.htm. Retrieved 2010-06-29.
- ^ Reiners, A.; Basri, G. (February 2007). "The First Direct Measurements of Surface Magnetic Fields on Very Low Mass Stars". The Astrophysical Journal 656 (2): 1121–1135. arXiv:astro-ph/0610365. Bibcode 2007ApJ...656.1121R. doi:10.1086/510304.
- ^ Jenkins, J. S.; et al. (October 2009). "Rotational Velocities for M Dwarfs". The Astrophysical Journal 704 (2): 975–988. Bibcode 2009ApJ...704..975J. doi:10.1088/0004-637X/704/2/975.
External links
Star systems (including brown dwarf systems) within 10–15 light-years from Earth. Procyon (11.44 ± 0.02 ly; 2 stars)Tau Ceti (11.905 ± 0.007 ly; 1 star)Epsilon Eridani (10.480 ± 0.003 ly; 1 star, 2 planets: planet b • planet c) • 61 Cygni (11.40 ± 0.02 ly; 2 stars) • Epsilon Indi (11.81 ± 0.01 ly; 1 star, 2 brown dwarfs)Ross 248 (10.31 ± 0.02 ly; 1 star) • Lacaille 9352 (10.69 ± 0.02 ly; 1 star) • Ross 128 (10.94 ± 0.05 ly; 1 star) • EZ Aquarii (11.27 ± 0.17 ly; 3 stars) • Struve 2398 (11.49 ± 0.06 ly; 2 stars) • Groombridge 34 (11.65 ± 0.03 ly; 2 stars) • DX Cancri (11.83 ± 0.13 ly; 1 star) • GJ 1061 (11.99 ± 0.06 ly; 1 star) • YZ Ceti (12.12 ± 0.14 ly; 1 star) • Luyten's Star (12.25 ± 0.03 ly; 1 star) • SCR 1845-6357 (12.57 ± 0.05 ly; 1 star, 1 brown dwarf) • Teegarden's star (12.57 ± 0.04 ly; 1 star) • Kapteyn's Star (12.76 ± 0.05 ly; 1 star) • Lacaille 8760 (12.87 ± 0.04 ly; 1 star) • Kruger 60 (13.15 ± 0.07 ly; 2 stars) • Ross 614 (13.34 ± 0.05 ly; 2 stars) • Wolf 1061 (13.92 ± 0.09 ly; 1 star) • Gliese 1 (14.16 ± 0.06 ly; 1 star) • Wolf 424 (14.31 ± 0.29 ly; 2 stars: Wolf 424 A • Wolf 424 B) • TZ Arietis (14.51 ± 0.19 ly; 1 star) • Gliese 687 (14.79 ± 0.06 ly; 1 star) • LHS 292 (14.81 ± 0.25 ly; 1 star)‡ • GJ 1245 (14.81 ± 0.07 ly; 3 stars) • Gliese 674 (14.82 ± 0.09 ly; 1 star, 1 planet: planet b)DZvan Maanen's star (14.02 ± 0.11 ly; 1 star)DEN 1048-3956 (13.12 ± 0.06 ly; 1 brown dwarf)UGPS 0722-05 (13.3 ± 2.0 ly; 1 brown dwarf)‡ • WISE 1741+2553 (17.9 + 3.3/- 3.1 ly; 1 brown dwarf)‡WISE 1541-2250 (9.3 + 4.1/- 2.2 ly; 1 brown dwarf)‡ • WISE 2056+1459 (9.8 + 11.1/- 2.0 ly; 1 brown dwarf)‡ • WISE 1738+2732 (11.1 + 12.7/- 0 ly; 1 brown dwarf)‡ • WISE 1405+5534 (~12.4 ly; 1 brown dwarf)‡ • WISE 0410+1502 (23.2 + 5.2/- 12.7 ly; 1 brown dwarf)‡In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems possibly located within declared distance interval, but probably not. Bayer Flamsteed 1 • 2 (ω) • 3 • 4 • 5 • 7 • 8 • 9 (μ¹) • 10 (μ²) • 11 • 12 • 13 (ψ¹) • 14 (ψ²) • 15 • 16 (ζ, Tegmen) • 17 (β, Tarf) • 18 (χ) • 19 (λ) • 20 (d¹) • 21 • 22 (φ¹) • 23 (φ²) • 24 • 25 (d²) • 27 • 28 • 29 • 30 (υ¹) • 31 (θ) • 32 (υ²) • 33 (η) • 34 • 35 • 36 (c) • 37 • 38 • 39 • 40 • 41 (ε) • 42 • 43 (γ, Asellus Borealis) • 45 (A¹) • 46 • 47 (δ, Asellus Australis) • 48 (ι) • 49 (b) • 50 (A²) • 51 (σ¹) • 52 • 53 • 54 • 55 (ρ¹) • 57 • 58 (ρ²) • 59 (σ²) • 60 • 61 • 62 (ο¹) • 63 (ο²) • 64 (σ³) • 65 (α, Acubens / Sertan) • 66 • 67 • 68 • 69 (ν) • 70 • 72 (τ) • 74 • 75 • 76 (κ) • 77 (ξ) • 78 • 79 • 80 • 81 • 82 (π) • 83Nearby DX • EI • LHS 2090 • Gliese 299List Categories:- Cancer constellation
- M-type main sequence stars
- Flare stars
- Gliese and GJ objects
- Objects named with variable star designations
- Main sequence star stubs
- Variable star stubs
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