Gamma Canis Minoris
Template:Location mark Location of γ Canis Minoris (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Canis Minor |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | +4.33[2] (4.46 + 6.66)[2] |
| Characteristics | |
| Spectral type | K3 III Fe-0.5[3] (K4 III + K1: III)[2] |
| U−B Template:Engvar | +1.53[4] |
| B−V Template:Engvar | +1.43[4] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[5] km/s |
| Proper motion (μ) | RA: −61.09[1] mas/yr Dec.: −10.70[1] mas/yr |
| Parallax (π) | 10.25±0.47 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | Script error: No such module "val".[2] |
| Absolute magnitude (MV) | Script error: No such module "val".[2] |
| Orbit[2] | |
| Period (P) | 389.310 ± 0.012d |
| Semi-major axis (a) | 17 mas |
| Eccentricity (e) | 0.25856 ± 0.00039 |
| Inclination (i) | 66° |
| Periastron epoch (T) | 2449849.172 ± 0.089 HJD |
| Argument of periastron (ω) (secondary) | 142.079 ± 0.090° |
| Semi-amplitude (K1) (primary) | 21.243 ± 0.010 km/s |
| Semi-amplitude (K2) (secondary) | 21.526 ± 0.017 km/s |
| Details[2] | |
| γ CMi A | |
| Mass | 1.88 Template:Solar mass |
| Radius | Script error: No such module "val". Template:Solar radius |
| Luminosity | Script error: No such module "val". Template:Solar luminosity |
| Temperature | Script error: No such module "val". K |
| Rotational velocity (v sin i) | Script error: No such module "val". km/s |
| Age | 1.3 Gyr |
| γ CMi B | |
| Mass | 1.85 Template:Solar mass |
| Radius | Script error: No such module "val". Template:Solar radius |
| Luminosity | Script error: No such module "val". Template:Solar luminosity |
| Temperature | Script error: No such module "val". K |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Rotational velocity (v sin i) | Script error: No such module "val". km/s |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
Gamma Canis Minoris (γ Canis Minoris) is a binary star system in the equatorial constellation Canis Minor. Its orange colour is obvious when seen through binoculars.[7] The system is visible to the naked eye with a combined apparent visual magnitude of +4.33.[2] Based upon an annual parallax shift of 10.25 mas as seen from Earth,[1] this system is located about 320 light years from the Sun.
This spectroscopic binary star system has an orbital period of 389.31 days, a semimajor axis of 1.48 AU, and an eccentricity of 0.2586.[2] Their variable radial velocity was discovered by H. M. Reese in 1902 at Lick Observatory.[8] Both components are evolved, K-type giant stars, most likely on their first ascent along the red giant branch. The primary, component A, has a stellar classification of K4 III while the secondary, component B, may be K1: III.[2]
References
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- ↑ a b c d e f Script error: No such module "citation/CS1".
- ↑ a b c d e f g h i j Script error: No such module "citation/CS1".
- ↑ 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
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
Script error: No such module "Check for unknown parameters".