Sigma1 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) | 5.68[3] + 13.3[4] |
| Characteristics | |
| Spectral type | A8 Vas[5] |
| U−B Template:Engvar | +0.08[3] |
| B−V Template:Engvar | +0.20[3] |
| Variable type | Constant[1] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[6] km/s |
| Proper motion (μ) | RA: −5.598 mas/yr[2] Dec.: +15.832 mas/yr[2] |
| Parallax (π) | 14.7289±0.0959 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +1.62[1] |
| Details | |
| σ1 Cnc A | |
| Mass | 1.70[7] Template:Solar mass |
| Luminosity | 18[8] Template:Solar luminosity |
| Surface gravity (log g) | 4.44[7] cgs |
| Temperature | Script error: No such module "val".[7] K |
| Rotational velocity (v sin i) | 84[8] km/s |
| Age | 301[7] Myr |
| σ1 Cnc B | |
| Mass | 0.62[9] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[10] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
Sigma1 Cancri is a binary star system[9] in the zodiac constellation of Cancer. Its name is a Bayer designation that is Latinized from σ1 Cancri, and abbreviated Sigma1 Cnc or σ1 Cnc. The primary component is faintly visible to the naked eye, with an apparent visual magnitude of +5.68.[3] Based upon an annual parallax shift of Script error: No such module "val". as seen from Earth,[2] this star is located around Script error: No such module "convert". from the Sun. It is moving further away with a line of sight velocity of −11 km/s.[6]
This is a chemically peculiar[8] A-type main sequence star with a stellar classification of A8 Vas.[5] At an age of about 301[7] million years, Sigma1 Cancri is around 67% of the way through its main sequence lifespan.[8] The star has 1.7[7] times the mass of the Sun and is radiating 18[8] times the Sun's luminosity from its photosphere at an effective temperature of 8,116 K.[7]
There is a magnitude 13.3 companion at an angular separation of 5.2 arc seconds along a position angle of 276°, as of 2011.[4] At that distance, the pair have a projected separation of Template:Cvt. This star, designated Sigma1 Cancri B, has an estimated 62% of the mass of the Sun.[9]
References
<templatestyles src="Reflist/styles.css" />
- ↑ a b c Template:Cite XHIP
- ↑ a b c d e Template:Cite Gaia DR3
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b 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".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
Script error: No such module "Check for unknown parameters".