Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aquila |
Right ascension | 19h 19m 53.06713s [1] |
Declination | +11° 32′ 05.8722″ [1] |
Apparent magnitude (V) | 6.03 [2] |
Characteristics | |
Spectral type | A2 V [3] or F0V [2] |
U−B color index | +0.087±0.007 [2] |
B−V color index | +0.08 [4] |
Astrometry | |
Radial velocity (Rv) | −26.0±4.3 [5] [2] km/s |
Proper motion (μ) |
RA: 44.042
[1]
mas/
yr Dec.: 22.393 [1] mas/ yr |
Parallax (π) | 11.7035 ± 0.0703 mas [1] |
Distance | 279 ± 2
ly (85.4 ± 0.5 pc) |
Absolute magnitude (MV) | 1.48 [2] |
Details | |
Mass | 2.01 [6] M☉ |
Radius | 2.0 [7] R☉ |
Luminosity | 22 [2] L☉ |
Temperature | 8,936 [8] K |
Rotational velocity (v sin i) | 154 [9] km/s |
Age | 224 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Omega2 Aquilae, Latinized from ω2 Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila, the eagle. [10] It has an apparent visual magnitude of 6.0, [2] which is close to the lower limit of detectability with the naked eye. According to the Bortle Dark-Sky Scale, this star can be viewed from dark rural skies. As the Earth orbits about the Sun, this star undergoes a parallax shift of 11.7 mas. [1] This is equivalent to a physical distance of 279 light-years (86 parsecs) from Earth, give or take a 2 light year margin of error. The star is drifting closer to the Sun with a radial velocity of −26 km/s. [2]
Analysis of the spectrum of this white-hued star shows it to match a stellar classification of A2 V, [3] indicating it is an A-type main sequence star. It has about double the size and mass of the Sun. [7] The star is radiating 22 [2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,936 K, [8] giving it the white hue of an A-type star. [11] Omega2 Aquilae is 224 [6] million years old and is spinning rapidly with a projected rotational velocity of 154 km/s. [9]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aquila |
Right ascension | 19h 19m 53.06713s [1] |
Declination | +11° 32′ 05.8722″ [1] |
Apparent magnitude (V) | 6.03 [2] |
Characteristics | |
Spectral type | A2 V [3] or F0V [2] |
U−B color index | +0.087±0.007 [2] |
B−V color index | +0.08 [4] |
Astrometry | |
Radial velocity (Rv) | −26.0±4.3 [5] [2] km/s |
Proper motion (μ) |
RA: 44.042
[1]
mas/
yr Dec.: 22.393 [1] mas/ yr |
Parallax (π) | 11.7035 ± 0.0703 mas [1] |
Distance | 279 ± 2
ly (85.4 ± 0.5 pc) |
Absolute magnitude (MV) | 1.48 [2] |
Details | |
Mass | 2.01 [6] M☉ |
Radius | 2.0 [7] R☉ |
Luminosity | 22 [2] L☉ |
Temperature | 8,936 [8] K |
Rotational velocity (v sin i) | 154 [9] km/s |
Age | 224 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Omega2 Aquilae, Latinized from ω2 Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila, the eagle. [10] It has an apparent visual magnitude of 6.0, [2] which is close to the lower limit of detectability with the naked eye. According to the Bortle Dark-Sky Scale, this star can be viewed from dark rural skies. As the Earth orbits about the Sun, this star undergoes a parallax shift of 11.7 mas. [1] This is equivalent to a physical distance of 279 light-years (86 parsecs) from Earth, give or take a 2 light year margin of error. The star is drifting closer to the Sun with a radial velocity of −26 km/s. [2]
Analysis of the spectrum of this white-hued star shows it to match a stellar classification of A2 V, [3] indicating it is an A-type main sequence star. It has about double the size and mass of the Sun. [7] The star is radiating 22 [2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,936 K, [8] giving it the white hue of an A-type star. [11] Omega2 Aquilae is 224 [6] million years old and is spinning rapidly with a projected rotational velocity of 154 km/s. [9]