Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 01h 47m 44.83363s [1] |
Declination | +63° 51′ 09.0073″ [1] |
Apparent magnitude (V) | 5.63 [2] |
Characteristics | |
Spectral type | K0 V [3] |
U−B color index | +0.40 [2] |
B−V color index | +0.80 [3] |
Astrometry | |
Radial velocity (Rv) | +1.41 [3] km/s |
Proper motion (μ) |
RA: +582.028±0.070
[1]
mas/
yr Dec.: −246.228±0.086 [1] mas/ yr |
Parallax (π) | 99.5746 ± 0.0595 mas [1] |
Distance | 32.75 ± 0.02
ly (10.043 ± 0.006 pc) |
Absolute magnitude (MV) | 5.61 [4] |
Details | |
Mass | 0.825±0.021 [5] M☉ |
Radius | 0.819±0.024 [6] R☉ |
Luminosity | 0.516±0.010 [5] L☉ |
Temperature | 5,407±4.0 [7] K |
Metallicity [Fe/H] | −0.02 [8] dex |
Rotation | 21.67 days [9] |
Rotational velocity (v sin i) | 2.0 [9] km/s |
Age | 2.2 - 3.5 [9] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
ARICNS | data |
HR 511 (also designated V987 Cassiopeiae and Gliese 75 among others) is an orange dwarf of spectral type K0V in the constellation Cassiopeia. With an apparent magnitude of 5.63, [2] it is faintly visible to the naked eye. The star is relatively close, 32.8 light years from the Sun. [1]
This star is estimated to be about the same age as the Sun, with 83% of the mass of the Sun and 82% of the Sun's radius. It has not been identified as a member of any moving star groups. This star has displayed unusual emissions of Ca II and is much more x-ray luminous than the Sun. It is considered a relatively active star. [9] Based on an iron abundance of [Fe/H] = −0.02, the metallicity of this star appears to be similar to that of the Sun. [8]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 01h 47m 44.83363s [1] |
Declination | +63° 51′ 09.0073″ [1] |
Apparent magnitude (V) | 5.63 [2] |
Characteristics | |
Spectral type | K0 V [3] |
U−B color index | +0.40 [2] |
B−V color index | +0.80 [3] |
Astrometry | |
Radial velocity (Rv) | +1.41 [3] km/s |
Proper motion (μ) |
RA: +582.028±0.070
[1]
mas/
yr Dec.: −246.228±0.086 [1] mas/ yr |
Parallax (π) | 99.5746 ± 0.0595 mas [1] |
Distance | 32.75 ± 0.02
ly (10.043 ± 0.006 pc) |
Absolute magnitude (MV) | 5.61 [4] |
Details | |
Mass | 0.825±0.021 [5] M☉ |
Radius | 0.819±0.024 [6] R☉ |
Luminosity | 0.516±0.010 [5] L☉ |
Temperature | 5,407±4.0 [7] K |
Metallicity [Fe/H] | −0.02 [8] dex |
Rotation | 21.67 days [9] |
Rotational velocity (v sin i) | 2.0 [9] km/s |
Age | 2.2 - 3.5 [9] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
ARICNS | data |
HR 511 (also designated V987 Cassiopeiae and Gliese 75 among others) is an orange dwarf of spectral type K0V in the constellation Cassiopeia. With an apparent magnitude of 5.63, [2] it is faintly visible to the naked eye. The star is relatively close, 32.8 light years from the Sun. [1]
This star is estimated to be about the same age as the Sun, with 83% of the mass of the Sun and 82% of the Sun's radius. It has not been identified as a member of any moving star groups. This star has displayed unusual emissions of Ca II and is much more x-ray luminous than the Sun. It is considered a relatively active star. [9] Based on an iron abundance of [Fe/H] = −0.02, the metallicity of this star appears to be similar to that of the Sun. [8]