Tau¹ Aquarii
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- For other star systems with this Bayer designation, see Tau Aquarii.
| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Aquarius |
| Right ascension | 22h 47m 42.7684s |
| Declination | -14° 03′ 23.142″ |
| Apparent magnitude (V) | 5.678 |
| Characteristics | |
| Spectral type | B9V |
| U-B color index | -0.25 |
| B-V color index | -0.05 |
| Astrometry | |
| Radial velocity (Rv) | 15 km/s |
| Proper motion (μ) | RA: 29.03 mas/yr Dec.: -9.44 mas/yr |
| Parallax (π) | 12.55 ± 1.19 mas |
| Distance | 260 ± 20 ly (80 ± 8 pc) |
| Absolute magnitude (MV) | 5.661 |
| Details | |
| Mass | ? M☉ |
| Radius | ? R☉ |
| Luminosity | ? L☉ |
| Temperature | ? K |
| Metallicity | ? |
| Rotation | ? |
| Age | ? years |
| Visual binary orbit | |
| Companion | τ1 Aquarii B |
| Semimajor axis (a) | 23.7" |
| Visual binary orbit | |
| Companion | τ1 Aquarii C |
| Semimajor axis (a) | 22.6" |
| Inclination (i) | 122° |
| Visual binary orbit | |
| Companion | τ1 Aquarii D |
| Semimajor axis (a) | 63.4" |
| Inclination (i) | 34° |
| Other designations | |
| Database references | |
| SIMBAD | data |
Tau1 Aquarii (τ1 Aqr / τ1 Aquarii) is a star in the constellation Aquarius. It is approximately 260 light years from Earth.
τ1 Aquarii is a white A-type main sequence dwarf with an apparent magnitude of +5.68.
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Database references |
|---|---|---|---|---|
| Tau1 Aquarii B (BD-14 6346B) | 22h 47m 48s | -14° 03' 00 | 9.73 | Simbad |
| Tau1 Aquarii C (BD-14 6346C) | 22h 47m 48s | -14° 02'00 | Simbad | |
| Tau1 Aquarii D (CCDM J22477-1403D) | 22h 47m 45.3s | -14° 02' 30.0 | Simbad |
[edit] Reference
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