| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Andromeda |
| Right ascension | 20h 47m 44.236s |
| Declination | -05° 01′ 39.723″ |
| Apparent magnitude (V) | 4.478 |
| Characteristics | |
| Spectral type | M3III |
| U−B color index | 1.92 |
| B−V color index | 1.65 |
| Variable type | Semiregular Variable star |
| Astrometry | |
| Radial velocity (Rv) | -22 km/s |
| Proper motion (μ) | RA: -3.3 mas/yr Dec.: -40.24 mas/yr |
| Parallax (π) | 7.33 ± 0.99 mas |
| Distance | approx. 440 ly (approx. 140 pc) |
| Absolute magnitude (MV) | 6.104 |
| Details | |
| Mass | 0.4 M☉ |
| Radius | 0.5 R☉ |
| Luminosity | 0.04 L☉ |
| Temperature | 2,000–3,500 K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Other designations | |
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EN Aqr, 3 Aqr, k Aqr, 2MASS J20474422-0501395, TYC 5186-2125-1, GSC 05186-02125, N30 4599, UBV M 25160, HD 198026, PLX 4961, UBV 18001, BD-05° 5378, HIC 102624, PMC 90-93 1092, YZ 95 7228, CSV 8571, HIP 102624, PPM 204454, EIC 838, HR 7951, RAFGL 2652, AAVSO 2042-05, FK5 1543, IRAS 20451-0512, SACS 456, GC 28979, IRC -10548, SAO 144814, GCRV 13035, JP11 3278.
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| Database references | |
| SIMBAD | data |
3 Aquarii or EN Aquarii or k Aquarii is a star in the constellation Aquarius. Its apparent magnitude is 4.43. It is approximately 445 ly from Earth.
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