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 | 0.106±0.009 [9] M☉ |
Radius | 0.1235±0.0006 [9] R☉ |
Luminosity | 0.00073±0.000007 [9] L☉ |
Surface gravity (log g) | ~5 [9] cgs |
Temperature | 2,840 [10] K |
Rotation | 0.46 days [11] |
Rotational velocity (v sin i) | 11.0 [12] km/s |
Age | 200 [13] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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 10% of the mass of the Sun, and 12% of the Sun's radius. [9] The outer envelope of the star has an effective temperature of 2,840 K, [10] 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]
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 | 0.106±0.009 [9] M☉ |
Radius | 0.1235±0.0006 [9] R☉ |
Luminosity | 0.00073±0.000007 [9] L☉ |
Surface gravity (log g) | ~5 [9] cgs |
Temperature | 2,840 [10] K |
Rotation | 0.46 days [11] |
Rotational velocity (v sin i) | 11.0 [12] km/s |
Age | 200 [13] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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 10% of the mass of the Sun, and 12% of the Sun's radius. [9] The outer envelope of the star has an effective temperature of 2,840 K, [10] 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]