5 Canum Venaticorum
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Canes Venatici |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | +4.767[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | G7 III Ba0.3[3] |
| B−V Template:Engvar | 0.868[2] |
| Astrometry | |
| Radial velocity (Rv) | −13.9[2] km/s |
| Proper motion (μ) | RA: +12.769[1] mas/yr Dec.: +11.904[1] mas/yr |
| Parallax (π) | 8.6983±0.1637 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.68[4] |
| Details | |
| Mass | 2.96[2] Template:Solar mass |
| Radius | 12[5] Template:Solar radius |
| Luminosity | 174[2] Template:Solar luminosity |
| Surface gravity (log g) | 2.60[4] cgs |
| Temperature | Script error: No such module "val".[2] K |
| Metallicity [Fe/H] | +0.01[4] dex |
| Rotational velocity (v sin i) | 6.6[6] km/s |
| Age | 530[2] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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5 Canum Venaticorum is a probable binary star[8] system in the northern constellation of Canes Venatici, located about 375 light years from the Sun.[1] It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of +4.77.[2] The system is moving closer to the Earth with a heliocentric radial velocity of −14 km/s.[2]
The visible component is an evolved G-type giant star with a stellar classification of G7 III Ba0.3.[3] The 'Ba0.3' suffix notation indicates this is a mild barium star, which means that the stellar atmosphere has been enhanced by s-process elements most likely provided by what is now an orbiting white dwarf companion.[8] The primary is 530[2] million years old with 2.96[2] times the mass of the Sun and has expanded to about 12[5] times the Sun's radius. It is radiating 174[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,098 K.[2]
In Chinese astronomy, 5 Canum Venaticorum is called 相, Pinyin: Xiāng, meaning Prime Minister, because this star is marking itself and stand alone in Prime Minister asterism, Purple Forbidden enclosure mansion (see : Chinese constellation).[9]
References
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- ↑ a b c d e f Template:Cite DR2
- ↑ a b c d e f g h i j k l m Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ Ian Ridpath's Startales - Canis Venatici the Hunting Dogs
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