HR 511
Template:Location mark Location of HR 511 (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.63[3] |
| Characteristics | |
| Spectral type | K0 V[4] |
| U−B Template:Engvar | +0.40[3] |
| B−V Template:Engvar | +0.80[4] |
| Astrometry | |
| Radial velocity (Rv) | Template:Val[2] km/s |
| Proper motion (μ) | RA: Template:Val mas/yr[2] Dec.: Template:Val mas/yr[2] |
| Parallax (π) | 99.5902±0.0438 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 5.61[5] |
| Details | |
| Mass | Template:Val[6] Template:Solar mass |
| Radius | Template:Val[7] Template:Solar radius |
| Luminosity | Template:Val[6] Template:Solar luminosity |
| Temperature | Template:Val[8] K |
| Metallicity [Fe/H] | −0.02[9] dex |
| Rotation | 21.67 days[10] |
| Rotational velocity (v sin i) | 2.0[10] km/s |
| Age | 2.2 - 3.5[10] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[11] | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
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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,[3] it is faintly visible to the naked eye. The star is relatively close, 32.8 light-years from the Sun.[2]
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.[10] Based on an iron abundance of [Fe/H] = −0.02, the metallicity of this star appears to be similar to that of the Sun.[9]
References
External links
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