| Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) |
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|---|---|
| Constellation | Aquarius |
| Right ascension | 21h 25m 16.9577s |
| Declination | -03° 33′ 24.291″ |
| Characteristics | |
| Spectral type | K4III |
| Astrometry | |
| Radial velocity (Rv) | -24.5 ±2 km/s |
| Parallax (π) | 7.99 ± 0.84 mas |
| Distance | approx. 410 ly (approx. 130 pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
21 Aquarii is a star in the constellation Aquarius. Its apparent magnitude is 5.48.
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