1 Aquarii
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| Observation data Epoch J2000.0 (ICRS) |
|
|---|---|
| Constellation | Aquarius |
| Right ascension | 20h 39m 24.892s/21.8s/27.1s |
| Declination | +00° 29′ 11.20″/ +00° 28′ 27″/ +00° 30′ 09″ |
| Apparent magnitude (V) | 5.4/11.5/11.3 |
| Spectral Characteristics | |
| Spectral type | A: K1 III |
| U-B color index | 0.97 |
| B-V color index | 1.06 |
| Variable type | none |
| Astrometry (1 Aqr A) | |
| Parallax (π) | 13.33±0.88 mas |
| Distance | 245±16 ly 75±5 pc |
| Other designations | |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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1 Aquarii, also known as 1 Aqr, is a multiple star in the constellation Aquarius. 1 Aqr A is a K-class giant. Its companions, B and C, are optical and have no physical relation to 1 Aqr A. 1 Aquarii is known to be an infrared source.
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