Sigma2 Cancri
Template:Other stars by Bayer designation
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cancer[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | +5.436[3] |
| Characteristics | |
| Spectral type | A7 IV[4] |
| B−V Template:Engvar | +0.157[3] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[5] km/s |
| Proper motion (μ) | RA: −53.031 mas/yr[2] Dec.: −66.186 mas/yr[2] |
| Parallax (π) | 17.0377±0.0716 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +1.57[1] |
| Details | |
| Mass | 1.79[6] Template:Solar mass |
| Radius | 2.28Script error: No such module "Su".[2] Template:Solar radius |
| Luminosity | 21.5[4] Template:Solar luminosity |
| Surface gravity (log g) | 4.17[6] cgs |
| Temperature | Script error: No such module "val".[6] K |
| Rotational velocity (v sin i) | 133[4] km/s |
| Age | 441[6] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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Sigma2 Cancri is a solitary,[8] white-hued star in the constellation Cancer. Its name is a Bayer designation that is Latinized from σ2 Cancri, and abbreviated Sigma2 Cnc σ2 Cnc. This star is faintly visible to the naked eye, having an apparent visual magnitude of +5.44.[3] Based upon an annual parallax shift of Script error: No such module "val". as seen from Earth,[2] this star is located Script error: No such module "convert". from the Sun. It is drifting closer to the Sun with a radial velocity of −26 km/s.[5]
With an estimated age of 441[6] million years, this is an A-type subgiant star with a stellar classification of A7 IV.[4] It is spinning rapidly with a projected rotational velocity of 133 km/s.[4] The star has an estimated 1.8[6] times the mass of the Sun with 2.3 times the Sun's radius.[2] It is radiating 21.5[4] times the Sun's luminosity from its photosphere at an effective temperature of roughly 8,309 K.[6]
References
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- ↑ a b Template:Cite XHIP
- ↑ a b c d e f g Template:Cite Gaia DR3
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e f g Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
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