An ultraviolet band light curve for a flare on DX Cancri, adapted from Pettersen (1981)[1]
Observation data Epoch J2000 Equinox J2000
Constellation
Cancer
Right ascension
08h 29m 49.345s[2]
Declination
+26° 46′ 33.74″[2]
Apparent magnitude (V)
14.81[3]
Characteristics
Spectral type
M6.5V[4]
Apparent magnitude (J)
8.2[3]
U−B color index
+2.11[5]
B−V color index
+2.08[5]
Variable type
Flare star[3]
Astrometry
Radial velocity (Rv)
+9.0[6] km/s
Proper motion (μ)
RA: −1,140[2] mas/yr Dec.: −602[2] mas/yr
Parallax (π)
279.2496 ± 0.0637 mas[7]
Distance
11.680 ± 0.003 ly (3.5810 ± 0.0008 pc)
Absolute magnitude (MV)
16.98[8]
Details
Mass
0.09[8]M☉
Radius
0.11[9]R☉
Luminosity
0.00065[10]L☉
Temperature
2,840[11] K
Rotation
0.46 days[9]
Rotational velocity (v sin i)
11.0[12] km/s
Age
200[13] Myr
Other designations
G 051-015, GCTP 2016.01, GJ 1111, LHS 248[3]
Database references
SIMBAD
data
DX
Location of DX Cancri in the constellation Cancer
DX Cancri is a variable star in the northern zodiac constellation of Cancer. With an apparent visual magnitude of 14.81,[3] it is much too faint to be seen with the naked eye. Visually viewing this star requires a telescope with a minimum aperture of 16 in (41 cm).[14] Based upon parallax measurements, DX Cancri is located at a distance of 11.8 light-years (3.6 parsecs) from Earth. This makes it the 18th closest star (or star system) to the Sun.
The star has a stellar classification of M6.5V,[4] identifying it as a type of main sequence star known as a red dwarf. It has about 9% of the mass of the Sun,[8] and 11% of the Sun's radius.[9] The outer envelope of the star has an effective temperature of 2,840 K,[11] making it an M-type star. It is a flare star that has random, intermittent increases in brightness by up to a factor of five. It is a proposed member of the Castor Moving Group of stars that share a common trajectory through space. This group has an estimated age of 200 million years.[15]
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^Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
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DXCancri is a variable star in the northern zodiac constellation of Cancer. With an apparent visual magnitude of 14.81, it is much too faint to be seen...
Laszlo; Sturmann, Judit; White, Russel; Turner, Nils H. (2011-10-10). "55 Cancri: Stellar Astrophysical Parameters, a Planet in the Habitable Zone, and Implications...
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