5 Aquarii
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 20h 52m 08.694s[1] |
| Declination | −05° 30′ 25.41″[1] |
| Apparent magnitude (V) | 5.546 |
| Characteristics | |
| Spectral type | B9III |
| U−B color index | -0.27 |
| B−V color index | -0.08 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | -2.1 km/s |
| Proper motion (μ) | RA: 0.70 ± 0.38[1] mas/yr Dec.: -5.52 ± 0.23[1] mas/yr |
| Parallax (π) | 5.02 ± 0.31[1] mas |
| Distance | 650 ± 40 ly (200 ± 10 pc) |
| Absolute magnitude (MV) | 5.465 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20,000 L☉ |
| Temperature | 10,000–30,000 K |
| Rotation | 7.09753 d |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
5 Aquarii (abbreviated 5 Aqr) is a star in the constellation Aquarius. 5 Aquarii is the Flamsteed designation. Its apparent magnitude is 5.55. It is roughly 650 light years from Earth
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
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