Rho Aquilae
Star in the constellation Delphinus / From Wikipedia, the free encyclopedia
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Rho Aquilae, ρ Aquilae, is the Bayer designation for a star in the northern constellation of Delphinus. It has an apparent visual magnitude of 4.94[2] and is bright enough to be seen with the naked eye in good conditions.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Delphinus |
Right ascension | 20h 14m 16.61886s[1] |
Declination | +15° 11′ 51.3923″[1] |
Apparent magnitude (V) | 4.94[2] |
Characteristics | |
Spectral type | A2 V[3] |
U−B color index | +0.01[4] |
B−V color index | +0.09[4] |
Astrometry | |
Radial velocity (Rv) | −23.0[2] km/s |
Proper motion (μ) | RA: +55.03[1] mas/yr Dec.: +58.14[1] mas/yr |
Parallax (π) | 21.75 ± 0.26 mas[1] |
Distance | 150 ± 2 ly (46.0 ± 0.5 pc) |
Absolute magnitude (MV) | +1.63[5] |
Details | |
Mass | 1.94±0.04[6] M☉ |
Radius | 1.95[7] R☉ |
Luminosity | 22[6] L☉ |
Surface gravity (log g) | 4.2[7] cgs |
Temperature | 8,900±100[6] K |
Metallicity [Fe/H] | −0.21[8] dex |
Rotational velocity (v sin i) | 180[9] km/s |
Age | 300±100[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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