25 Aquarii
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25 Aquarii
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquarius |
| Right ascension | 21h 39m 33.2658s |
| Declination | +02° 14′ 36.81″ |
| Apparent magnitude (V) | 5.106 |
| Characteristics | |
| Spectral type | K0III |
| U−B color index | 0.9 |
| B−V color index | 1.04 |
| Astrometry | |
| Radial velocity (Rv) | -34.7 km/s |
| Proper motion (μ) | RA: -32.70 mas/yr Dec.: -84.17 mas/yr |
| Parallax (π) | 13.55 ± 0.88 mas |
| Distance | 240 ± 20 ly (74 ± 5 pc) |
| Absolute magnitude (MV) | 6.135 |
| Details | |
| Mass | 0,8 M☉ |
| Radius | 0,9 R☉ |
| Luminosity | 0,4 L☉ |
| Temperature | 3,500–5,000 K |
| Metallicity | ? |
| Rotation | < 0,006574611 Year |
| Age | ? years |
| Orbit | |
| Companion | 25 Aquarii B |
| Semimajor axis (a) | 132.6" |
| Inclination (i) | 45° |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
25 Aquarii is a star in the constellation Aquarius. Its apparent magnitude is 5.10.
25 Aquarii was a latter designation of 6 Pegasi.[1]
Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Database references |
|---|---|---|---|---|
| 25 Aquarii B (BD+01 4517B) | 21h 39m 39.6s | +02° 16' 12 | 11.6 | Simbad |
References
- ^ Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy, Vol.18, NO. 3/AUG, P.209, 1987 18: 220. Bibcode 1987JHA....18..209W.
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