DX Cancri
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | 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] |
| Apparent magnitude (J) | 8.2[2] |
| 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/yr |
| Parallax (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 | 0.11[8] R☉ |
| Luminosity | 0.00065[9] L☉ |
| Temperature | 2,840[10] K |
| Rotation | 0.46 days[8] |
| Rotational velocity (v sin i) | 11.0[11] km/s |
| Age | 200[12] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
DX Cancri is the variable star identifier for a small star in the northern zodiac constellation of Cancer the crab. With an apparent visual magnitude of 14.81,[2] 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).[13] 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.
This star has a stellar classification of M6.5V,[3] identifying it as a type of main sequence star known as a red dwarf. It has about 9%[7] of the mass of the Sun and 11%[8] of the Sun's radius. The outer envelope of the star has an effective temperature of 2,840 K,[10] giving it the cool red-orange glow of an M-type star. This is a flare star that has random, intermittent changes in brightness by up to a fivefold increase.
This star has been examined for excess emission of infrared radiation caused by cold circumstellar dust, but none was found.[12] 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.[14]
Contents
See also
References
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- Lua error in package.lua at line 80: module 'strict' not found. Table with parallaxes.
