Xi Aquarii
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aquarius |
| Right ascension | 21h 37m 45.1093s |
| Declination | -07° 51′ 15.125″ |
| Apparent magnitude (V) | 4.69 |
| Characteristics | |
| Spectral type | A7V |
| U-B color index | 0.13 |
| B-V color index | 0.17 |
| Astrometry | |
| Radial velocity (Rv) | -18 km/s |
| Proper motion (μ) | RA: 114.29 mas/yr Dec.: -24.44 mas/yr |
| Parallax (π) | 18.26 ± 0.84 mas |
| Distance | 179 ± 8 ly (55 ± 3 pc) |
| Absolute magnitude (MV) | 4.859 |
| Details | |
| Mass | 3,1 M☉ |
| Radius | 2,1 R☉ |
| Luminosity | 40 L☉ |
| Temperature | 7,500–10,000 K |
| Metallicity | ? |
| Rotation | 0,001892691 Year |
| Age | ? years |
| Orbit | |
| Companion | ξ Aquarii B |
| Period (P) | 21,9466119 yr |
| Semimajor axis (a) | 0.1" |
| Inclination (i) | 123° |
| Other designations | |
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HD 205767, 2MASS J21374510-0751150, ksi Aqr, GSC 05787-01291, N30 4769, TD1 28291, 23 Aqr, HERZ 16090, PLX 5208, TYC 5787-1291-1, MCA 68, PMC 90-93 1110, UBV M 25820, BD-08° 5701, HIP 106786, PPM 205412, UBV 18581, FK5 1569, HR 8264, ROT 3141, uvby98 100205767, GC 30268, IRAS 21350-0804, SAO 145537, YZ 98 7765, GCRV 13580, JP11 3371, SBC7 864.
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| Database references | |
| SIMBAD | data |
Xi Aquarii (ξ Aqr / ξ Aquarii) is a star in the constellation Aquarius. It has the traditional name Bunda.
Bunda belongs to the spectral class A7V and has a stellar magnitude of +4.68. It is approximately 179 light-years from Earth. It is a spectroscopic binary which completes one orbit every 8016 days.
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