51 Aquarii
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51 Aquarii |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 24m 06.8841s |
| Declination | -04° 50′ 13.272″ |
| Apparent magnitude (V) | 5.781 |
| Characteristics | |
| Spectral type | A0V |
| U-B color index | -0.11 |
| B-V color index | -0.04 |
| Astrometry | |
| Radial velocity (Rv) | 6 km/s |
| Proper motion (μ) | RA: 26.35 mas/yr Dec.: -7.77 mas/yr |
| Parallax (π) | 7.69 ± 0.89 mas |
| Distance | approx. 420 ly (approx. 130 pc) |
| Absolute magnitude (MV) | 5.754 |
| Details | |
| Mass | 3,1 M☉ |
| Radius | 2,1 R☉ |
| Luminosity | 40 L☉ |
| Temperature | 7,500–10,000 K |
| Metallicity | ? |
| Rotation | 0,0044842219 Year |
| Age | ? years |
| Orbit | |
| Companion | 51 Aquarii B |
| Period (P) | 190 yr |
| Semimajor axis (a) | 0.49" |
| Eccentricity (e) | 0.46 |
| Inclination (i) | 137° |
| Longitude of the node (Ω) | 160.9° |
| Periastron epoch (T) | 1997 |
| Orbit | |
| Companion | 51 Aquarii C |
| Semimajor axis (a) | 54.4" |
| Inclination (i) | 342° |
| Orbit | |
| Companion | 51 Aquarii D |
| Semimajor axis (a) | 119.2" |
| Inclination (i) | 191° |
| Orbit | |
| Companion | 51 Aquarii E |
| Semimajor axis (a) | 130.7" |
| Inclination (i) | 133° |
| Other designations | |
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CCDM J22241-0451AB, GC 31307, HR 8533, UBV 19164, GCRV 14078, 2MASS J22240689-0450132, uvby98 100212404 AB, ** BU 172AB, PPM 206316, YZ 95 7794, ADS 15902 AB, GSC 05229-01622, SAO 146067, WDS J2224.1-0450, BD-05° 5780, HD 212404, WDS J22241-0450, CSI-05 5780 1, HIC 110578, TD1 29042, EXO 2221.5-0505, HIP 110578, TYC 5229-1622-1.
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| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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51 Aquarii is a star in the constellation Aquarius. Its apparent magnitude is 5.79.
[edit] References
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| ADS 15902 B (BD-05 5780C) | 22h 24m 05.6s | -04° 49' 19 | 10.1 | Simbad | |
| ADS 15902 C (BD-05 5780D) | 22h 24m 05.3s | -04° 52' 03 | 10.0 | Simbad | |
| ADS 15902 D (BD-05 5780E) | 22h 24m 13.2252s | -04° 51' 42.612 | 9.79 | Simbad |
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