HD 157753
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.75[3] |
| Characteristics | |
| Spectral type | K2III[4] |
| B−V Template:Engvar | +1.17[3] |
| Astrometry | |
| Radial velocity (Rv) | −8.70[5] km/s |
| Proper motion (μ) | RA: −5.244[2] mas/yr Dec.: −72.181[2] mas/yr |
| Parallax (π) | 9.2351±0.0635 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +0.53[1] |
| Details | |
| Mass | 1.4[6] Template:Solar mass |
| Radius | 15[7] Template:Solar radius |
| Luminosity | 68[7] Template:Solar luminosity |
| Surface gravity (log g) | 2.46[6] cgs |
| Temperature | 4,330[7] K |
| Metallicity [Fe/H] | −0.06[6] dex |
| Rotational velocity (v sin i) | <1.0[8] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| FK5 3386, HD 157753, HIP 85470, HR 6483, SAO 244763 | |
| Database references | |
| SIMBAD | data |
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HD 157753 is giant star in the southern constellation of Ara. It may be an astrometric binary,[9] and it has a faint, magnitude 13 companion at an angular separation of 31.5″ along a position angle of 356° (as of 2000).[10]
References
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