Omega2 Cancri
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 6.32[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A1 V[4] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[5] km/s |
| Proper motion (μ) | RA: −25.112[1] mas/yr Dec.: +12.038[1] mas/yr |
| Parallax (π) | 7.4046±0.0486 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 0.51[2] |
| Details | |
| Mass | Script error: No such module "val".[3] Template:Solar mass |
| Radius | 2.5[6] Template:Solar radius |
| Luminosity | Script error: No such module "val".[3] Template:Solar luminosity |
| Temperature | Script error: No such module "val".[3] K |
| Rotational velocity (v sin i) | 159[3] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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ω2 Cancri is a star in the zodiac constellation Cancer, located around 810 light years away from the Sun. It has the Flamsteed designation 4 Cancri; ω2 Cancri is the Bayer designation, which is Latinised to omega2 Cancri and abbreviated to ω2 Cnc or omega2 Cnc. The star is near the lower limit of visibility to the naked eye, having an apparent visual magnitude of 6.32.[2] It is moving closer to the Earth with a heliocentric radial velocity of −8 km/s.[5] The position of this star near the ecliptic means it is subject to lunar occultations.[8]
This is an ordinary A-type main-sequence star with a stellar classification of A1 V,[4] which indicates it is generating energy through hydrogen fusion at its core. It has 2.6[3] times the mass of the Sun and about 2.5[6] times the Sun's radius. The star is radiating 68[3] times the Sun's luminosity from its photosphere at an effective temperature of 9354 K.[3]
References
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- ↑ a b c d e Template:Cite Gaia DR2
- ↑ a b c d Script error: No such module "citation/CS1".
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- ↑ Template:Cite simbad
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