Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Canis Major |
Right ascension | 08h 10m 27.18056 s [1] |
Declination | +25° 30′ 26.4061″ [1] |
Apparent magnitude (V) | +5.73 [2] |
Characteristics | |
Spectral type | G7 V [3] |
U−B color index | +0.43 [2] |
B−V color index | +0.81 [2] |
Astrometry | |
Radial velocity (Rv) | −44.48±0.09 [4] km/s |
Proper motion (μ) |
RA: −73.35
[1]
mas/
yr Dec.: −347.60 [1] mas/ yr |
Parallax (π) | 24.18 ± 0.35 mas [1] |
Distance | 135 ± 2
ly (41.4 ± 0.6 pc) |
Absolute magnitude (MV) | +2.65 [5] |
Details [4] | |
Mass | 1.49±0.04 M☉ |
Radius | 3.20±0.11 R☉ |
Luminosity | 8 L☉ |
Surface gravity (log g) | 3.87±0.08 cgs |
Temperature | 5,311±23 K |
Metallicity [Fe/H] | −0.12±0.06 dex |
Rotational velocity (v sin i) | 0.98±0.42 km/s |
Age | 2.39±0.14 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
14 Cancri is a star in the northern zodiac constellation of Cancer. It can be referred to as ψ Cancri, very occasionally as ψ2 Cancri, to distinguish it from 13 Cancri which is sometimes called ψ1 Cancri. [7] It is just barely visible to the naked eye, having an apparent visual magnitude of +5.73. [2] Based upon an annual parallax shift of 24.18 mas as seen from Earth, [1] it is located 135 light years from the Sun. It may be a member of the Wolf 630 moving group of stars. [8]
This object has a stellar classification of G7 V, [3] which would suggest it is a G-type main-sequence star. However, Jofré et al. (2015) consider it to be a more evolved subgiant star due to a surface gravity of log g = 3.87. As such, it has an estimated 1.5 times the mass of the Sun and 3.2 times the Sun's radius. The star is 2.4 billion years old with what appears to be a leisurely rotation rate, judging by a projected rotational velocity of 0.98 km/s. It is radiating eight times the Sun's luminosity from its photosphere at an effective temperature of 5,311 K. [4]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Canis Major |
Right ascension | 08h 10m 27.18056 s [1] |
Declination | +25° 30′ 26.4061″ [1] |
Apparent magnitude (V) | +5.73 [2] |
Characteristics | |
Spectral type | G7 V [3] |
U−B color index | +0.43 [2] |
B−V color index | +0.81 [2] |
Astrometry | |
Radial velocity (Rv) | −44.48±0.09 [4] km/s |
Proper motion (μ) |
RA: −73.35
[1]
mas/
yr Dec.: −347.60 [1] mas/ yr |
Parallax (π) | 24.18 ± 0.35 mas [1] |
Distance | 135 ± 2
ly (41.4 ± 0.6 pc) |
Absolute magnitude (MV) | +2.65 [5] |
Details [4] | |
Mass | 1.49±0.04 M☉ |
Radius | 3.20±0.11 R☉ |
Luminosity | 8 L☉ |
Surface gravity (log g) | 3.87±0.08 cgs |
Temperature | 5,311±23 K |
Metallicity [Fe/H] | −0.12±0.06 dex |
Rotational velocity (v sin i) | 0.98±0.42 km/s |
Age | 2.39±0.14 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
14 Cancri is a star in the northern zodiac constellation of Cancer. It can be referred to as ψ Cancri, very occasionally as ψ2 Cancri, to distinguish it from 13 Cancri which is sometimes called ψ1 Cancri. [7] It is just barely visible to the naked eye, having an apparent visual magnitude of +5.73. [2] Based upon an annual parallax shift of 24.18 mas as seen from Earth, [1] it is located 135 light years from the Sun. It may be a member of the Wolf 630 moving group of stars. [8]
This object has a stellar classification of G7 V, [3] which would suggest it is a G-type main-sequence star. However, Jofré et al. (2015) consider it to be a more evolved subgiant star due to a surface gravity of log g = 3.87. As such, it has an estimated 1.5 times the mass of the Sun and 3.2 times the Sun's radius. The star is 2.4 billion years old with what appears to be a leisurely rotation rate, judging by a projected rotational velocity of 0.98 km/s. It is radiating eight times the Sun's luminosity from its photosphere at an effective temperature of 5,311 K. [4]