18 Aquarii
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquarius |
| Right ascension | 21h 24m 11.4934s |
| Declination | -12° 52′ 41.19″ |
| Apparent magnitude (V) | 5.489 |
| Characteristics | |
| Spectral type | F0V |
| B-V color index | 0.29 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | 8 km/s |
| Proper motion (μ) | RA: 91.67 mas/yr Dec.: 8.96 mas/yr |
| Parallax (π) | 20.80 ± 0.91 mas |
| Distance | 157 ± 7 ly (48 ± 2 pc) |
| Absolute magnitude (MV) | 5.744 |
| Details | |
| Mass | 1.7 M☉ |
| Radius | 1.4 R☉ |
| Luminosity | 6 L☉ |
| Temperature | 6,000–7,500 K |
| Metallicity | ? |
| Rotation | 0,0016193 Year |
| Age | ? years |
| Orbit | |
| Companion | β And B |
| Semimajor axis (a) | 48,9" |
| Inclination (i) | 321° |
| Other designations | |
|
SV* ZI 2007, GCRV 72140, 2MASS J21241147-1252412, TD1 28031, N30 4723, TYC 5781-1173-1, BD-13° 5923, GSC 05781-01173, NSV 13684, UBV M 25669, BDS 10945 A, HD 203705, PMC 90-93 1107, UBV 18459, CCDM J21242-1253A, HIC 105668, PPM 238788, uvby98 100203705, CSI-13 5923 1, HIP 105668, ROT 7715, YZC 11 7587, CSV 102088, HR 8187, SACS 470, FK5 1562, IDS 21187-1318 A, SAO 164364, GC 29957, IRAS 21214-1305.
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| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
18 Aquarii is a star in the constellation Aquarius. Its apparent magnitude is 5.48.
[edit] References
[edit] Components
| NAME | Right ascension | Declination | Apparent magnitude (V) | Spectral type | Database references |
|---|---|---|---|---|---|
| IDS 21187-1318 B (BD-13 5923B) | 21h 24m 08.9s | -12° 52' 01 | 13.0 | Simbad |
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