83 Cancri
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cancer |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 6.61[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F4V[2] + WD[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Variable type | constant[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: −135.130[1] mas/yr Dec.: −105.267[1] mas/yr |
| Parallax (π) | 24.5641±0.0966 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 3.57[2] |
| Orbit[3] | |
| Period (P) | Script error: No such module "val". |
| Eccentricity (e) | Script error: No such module "val". |
| Inclination (i) | Script error: No such module "val".° |
| Longitude of the node (Ω) | Script error: No such module "val".° |
| Periastron epoch (T) | Script error: No such module "val". |
| Argument of periastron (ω) (secondary) | Script error: No such module "val".° |
| Details | |
| 83 Cnc A | |
| Mass | 1.13[4] Template:Solar mass |
| Radius | Script error: No such module "val".[1] Template:Solar radius |
| Luminosity | Script error: No such module "val".[1] Template:Solar luminosity |
| Surface gravity (log g) | 3.99[4] cgs |
| Temperature | Script error: No such module "val".[1] K |
| Metallicity [Fe/H] | Script error: No such module "val".[2] dex |
| Age | 3.1[4] Gyr |
| 83 Cnc B | |
| Mass | 1.3[3] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[5] | |
| Database references | |
| SIMBAD | data |
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83 Cancri is an astrometric binary[6][7] star system in the northern constellation of Cancer, positioned near the constellation border with Leo. It is a challenge to view with the naked eye, having an apparent visual magnitude of 6.61.[2] Despite having a Flamsteed designation, the system was too faint to be included in the Bright Star Catalogue.[8] It is located at a distance of 133 light years from the Sun, based on parallax,[1] but is drifting closer with a radial velocity of −15 km/s.[2] 83 Cancri has a relatively high proper motion, traversing the celestial sphere at an angular rate of Script error: No such module "val". per annum.[9]
The pair have an orbital period of around 32 days and an eccentricity of about 0.6.[3] The visible member of this system, designated component A, is an F-type main-sequence star with a stellar classification of F4V.[2] Its atmosphere is enhanced with s-process elements, particularly strontium and yttrium, which is attributed to mass transfer from the companion while the latter was on the asymptotic giant branch.[10] The primary is 3.1[4] billion years old with 1.1[4] times the mass of the Sun and 1.5[1] times the Sun's radius. It is radiating 3.1[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,218 K.[1] The unseen secondary companion is most likely a high mass white dwarf, having around 1.3 times the Sun's mass.[3]
References
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- ↑ a b c d e f g h i j k l Template:Cite Gaia DR2
- ↑ a b c d e f g h i j Script error: No such module "citation/CS1".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
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