74 Aquarii
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74 Aquarii |
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 53m 28.7049s |
| Declination | -11° 36′ 59.451″ |
| Apparent magnitude (V) | 5.783 |
| Characteristics | |
| Spectral type | B8IV/V |
| U-B color index | -0.31 |
| B-V color index | -0.08 |
| Variable type | a2 CVn variable |
| Astrometry | |
| Radial velocity (Rv) | -7 km/s |
| Proper motion (μ) | RA: 23.03 mas/yr Dec.: 1.93 mas/yr |
| Parallax (π) | 4.96 ± 0.84 mas |
| Distance | approx. 700 ly (approx. 200 pc) |
| Absolute magnitude (MV) | 5.71 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20,000 L☉ |
| Temperature | 10,000–30,000 K |
| Metallicity | ? |
| Rotation | 0,1943162823958943 Year |
| Age | ? years |
| Orbit | |
| Companion | 74 Aquarii B |
| Period (P) | 19 yr |
| Semimajor axis (a) | 0,077" |
| Inclination (i) | 336° |
| Other designations | |
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V* HI Aqr, JP11 3545, TYC 5816-131-1, GSC 05816-00131, 2MASS J22532869-1136595, UBV M 26689, MCA 73, HD 216494, PPM 240893, UBV 19613, BD-12° 6371, HIC 113031, SAO 165359, uvby98 100216494 V, CCDM J22535-1137AB, HIP 113031, SBC7 933, YZC 11 8048, GC 31918, HR 8704, WDS J22535-1137, GCRV 73603, IDS 22482-1209, TD1 29427.
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| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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74 Aquarii or HI Aquarii is a star in the constellation Aquarius. Its apparent magnitude is 5.80.
[edit] References
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