Nu3 Canis Majoris
Template:Other stars by Bayer designation
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Canis Major |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 4.41[2] (4.63 + 8.56)[3] |
| Characteristics | |
| Evolutionary stage | horizontal branch[4] |
| Spectral type | K0 II-III[5] |
| U−B Template:Engvar | +1.04[2] |
| B−V Template:Engvar | +1.16[2] |
| Astrometry | |
| Radial velocity (Rv) | Template:Val[6] km/s |
| Proper motion (μ) | RA: −7.32[1] mas/yr Dec.: −8.72[1] mas/yr |
| Parallax (π) | 7.74±0.43 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −1.13[7] |
| Details[5] | |
| ν3 CMa A | |
| Mass | Template:Val[4] Template:Solar mass |
| Radius | 32.7 Template:Solar radius |
| Luminosity | 398 Template:Solar luminosity |
| Surface gravity (log g) | 2.34 cgs |
| Temperature | 4,510 K |
| Metallicity [Fe/H] | −0.24 dex |
| Rotation | 183 d |
| Rotational velocity (v sin i) | 8[8] km/s |
| Age | Template:Val[4] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[9] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
Nu3 Canis Majoris, Latinized from ν3 Canis Majoris, is a binary star[3] system in the southern constellation of Canis Major.
Characteristics
The star system, appearing as one star, is deemed visible to the naked eye with its combined apparent visual magnitude of 4.41.[2] Based upon an annual parallax shift of 7.74 mas as seen from Earth,[1] this system is about 420 light years from the Sun, much further than Nu1 and Nu2 which appear nearby when seen from one point in the Solar System.
The primary member, component A, is an evolved, orange-hued giant/bright giant hybrid with an apparent magnitude of +4.63[3] and a stellar classification of K0 II-III.[5] It is most likely (96% chance) on the horizontal branch.[4] The star has a moderate level of surface activity with a magnetic field strength of Template:Val and is a source of X-ray emission with a luminosity of Template:Val.[5]
This giant has an estimated 3.4[4] times the mass of the Sun and has expanded to 33[5] times the Sun's radius. It is radiating 398 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,510 K.[5] The star is spinning with the leisurely period of 183 days.[5] Its companion, component B has been observed at 1.040 arcseconds distant and has an apparent magnitude of +8.56.[3]
References
- ↑ a b c d e f Cite error: Invalid
<ref>tag; no text was provided for refs namedvanLeeuwen2007 - ↑ a b c d Cite error: Invalid
<ref>tag; no text was provided for refs namedFernie1983 - ↑ a b c d Cite error: Invalid
<ref>tag; no text was provided for refs namedEggleton2008 - ↑ a b c d e Cite error: Invalid
<ref>tag; no text was provided for refs namedreffert2015 - ↑ a b c d e f g Cite error: Invalid
<ref>tag; no text was provided for refs namedauriere2015 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs nameddeBruijne2012 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedAnderson2012 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedBernacca1970 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedSIMBAD