| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h31m 41.31672s[1] |
| Declination | −10° 54′ 19.8148″[1] |
| Apparent magnitude (V) | 6.39[2] |
| Characteristics | |
| Spectral type | A9/F0 V[3] or A8 III[4] |
| B−V color index | 0.290±0.009[2] |
| Astrometry | |
| Radial velocity (Rv) | +4.0±4.3[5] km/s |
| Proper motion (μ) | RA: +77.347[1] mas/yr Dec.: −52.472[1] mas/yr |
| Parallax (π) | 13.4137 ± 0.1535 mas[1] |
| Distance | 243 ± 3 ly (74.6 ± 0.9 pc) |
| Absolute magnitude (MV) | 2.12[2] |
| Details[6] | |
| Mass | 1.734±0.107 M☉ |
| Radius | 2.059+0.305 −0.164 R☉ |
| Luminosity | 11.73[2] L☉ |
| Surface gravity (log g) | 4.040+0.065 −0.104 cgs |
| Temperature | 7,477+377 −528 K |
| Metallicity [Fe/H] | 0.014+0.150 −0.120 dex |
| Rotational velocity (v sin i) | 30.0±10.0[7] km/s |
| Age | 1.086[8] Gyr |
| Other designations | |
CD−11° 5855, GC 31468, HD 213464, HIP 111200, HR 8583, SAO 165147[9] | |
| Database references | |
| SIMBAD | data |
58 Aquarii, abbreviated 58 Aqr, is a star in the constellationofAquarius. 58 Aquarii is its Flamsteed designation. It is a sixth magnitude star with an apparent visual magnitude of 6.39,[2] which means it is a challenge to view with the naked eye. Based upon an annual parallax shiftof13.4 mas,[1] it is located 243 light years from the Sun. This has been identified as a visual binary system with an orbital period of 829.976 days (2.27 years)[10] in a circular orbit (eccentricity of zero).[11]
The primary component has a stellar classification of A9/F0 V,[3] matching a main sequence star with a spectrum showing mixed traits of an A/F-type. (Cowley and Fraquelli [1974] has previously assigned it a giant star class of A8 III.)[4] It is a chemically peculiar Am star, showing metallic lines with no magnetic field.[7] The star has 1.7 times the mass of the Sun and 2.1 times the Sun's radius. It is radiating 12 times the Sun's luminosity from its photosphere at an effective temperature of 7,477 K.[6]
|
| |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| Stars |
| ||||||||||||
| |||||||||||||
| |||||||||||||
| |||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||
| |||||||||||||
