Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Camelopardalis |
Right ascension | 08h 19m 32.2891s [1] |
Declination | +75° 45′ 24.866″ [1] |
Apparent magnitude (V) | 5.54±0.01 [2] |
Characteristics | |
Evolutionary stage | Horizontal branch [3] |
Spectral type | G8 III [4] |
B−V color index | +0.9 [5] |
Astrometry | |
Radial velocity (Rv) | 4.33±0.16 [6] km/s |
Proper motion (μ) |
RA: +32.404
mas/
yr
[1] Dec.: +15.893 mas/ yr [1] |
Parallax (π) | 11.2853 ± 0.0516 mas [1] |
Distance | 289 ± 1
ly (88.6 ± 0.4 pc) |
Absolute magnitude (MV) | +0.88 [7] |
Details | |
Mass | 1.91 [8] M☉ |
Radius | 8.99 [9] R☉ |
Luminosity | 49.4±0.5 [10] L☉ |
Surface gravity (log g) | 2.77 [11] cgs |
Temperature | 5,078±5 [9] K |
Metallicity [Fe/H] | −0.12±0.01 [12] dex |
Rotational velocity (v sin i) | 1.3±1.4 [13] km/s |
Age | 1.31 [12] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 68375 (HR 3216) is a solitary [15] star in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye with an apparent magnitude of 5.54 [2] and is estimated to be 289 light years distant. [1] However, it is receding with a heliocentric radial velocity of 4.33 km/s. [6]
HD 68375 has a stellar classification of G8 III, [4] indicating that it is a red giant. It is currently on the horizontal branch, generating energy via fusion inside a helium core. Specifically, it is a red clump star, at the cool end of the horizontal branch where stars with near-solar metallicity are found. [3] After approximately 1 billion years, [12] the star now has a radius of 9 R☉ and an effective temperature of 5,078 K, [9] giving a yellow hue. Nevertheless, it has nearly double the mass of the Sun [8] and radiates at 49 times the luminosity of the Sun [10] from its enlarged photosphere. HD 68375 is slightly metal deficient with a metallicity 76% that of the Sun [12] and spins with a poorly constrained projected rotational velocity of 1.3 km/s. [13]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Camelopardalis |
Right ascension | 08h 19m 32.2891s [1] |
Declination | +75° 45′ 24.866″ [1] |
Apparent magnitude (V) | 5.54±0.01 [2] |
Characteristics | |
Evolutionary stage | Horizontal branch [3] |
Spectral type | G8 III [4] |
B−V color index | +0.9 [5] |
Astrometry | |
Radial velocity (Rv) | 4.33±0.16 [6] km/s |
Proper motion (μ) |
RA: +32.404
mas/
yr
[1] Dec.: +15.893 mas/ yr [1] |
Parallax (π) | 11.2853 ± 0.0516 mas [1] |
Distance | 289 ± 1
ly (88.6 ± 0.4 pc) |
Absolute magnitude (MV) | +0.88 [7] |
Details | |
Mass | 1.91 [8] M☉ |
Radius | 8.99 [9] R☉ |
Luminosity | 49.4±0.5 [10] L☉ |
Surface gravity (log g) | 2.77 [11] cgs |
Temperature | 5,078±5 [9] K |
Metallicity [Fe/H] | −0.12±0.01 [12] dex |
Rotational velocity (v sin i) | 1.3±1.4 [13] km/s |
Age | 1.31 [12] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 68375 (HR 3216) is a solitary [15] star in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye with an apparent magnitude of 5.54 [2] and is estimated to be 289 light years distant. [1] However, it is receding with a heliocentric radial velocity of 4.33 km/s. [6]
HD 68375 has a stellar classification of G8 III, [4] indicating that it is a red giant. It is currently on the horizontal branch, generating energy via fusion inside a helium core. Specifically, it is a red clump star, at the cool end of the horizontal branch where stars with near-solar metallicity are found. [3] After approximately 1 billion years, [12] the star now has a radius of 9 R☉ and an effective temperature of 5,078 K, [9] giving a yellow hue. Nevertheless, it has nearly double the mass of the Sun [8] and radiates at 49 times the luminosity of the Sun [10] from its enlarged photosphere. HD 68375 is slightly metal deficient with a metallicity 76% that of the Sun [12] and spins with a poorly constrained projected rotational velocity of 1.3 km/s. [13]