Location of 106 Aquarii (circled)
[1] | |
Observation data Epoch J2000.0 ( ICRS) Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aquarius |
Right ascension | 23h 44m 12.07852s [2] |
Declination | –18° 16′ 36.9999″ [2] |
Apparent magnitude (V) | +5.244 [3] |
Characteristics | |
Spectral type | B9 V [4] |
U−B color index | –0.239 [3] |
B−V color index | –0.086 [3] |
Astrometry | |
Radial velocity (Rv) | +14.0 [5] km/s |
Proper motion (μ) |
RA: +27.23
[6]
mas/
yr Dec.: –2.94 [6] mas/ yr |
Parallax (π) | 8.7588 ± 0.2859 mas [2] |
Distance | 370 ± 10
ly (114 ± 4 pc) |
Absolute magnitude (MV) | −0.07 [7] |
Details | |
Mass | 3.0 [8] M☉ |
Radius | 2.7–3.2 [9] R☉ |
Luminosity | 151.88 [7] L☉ |
Surface gravity (log g) | 3.791±0.011 [8] cgs |
Temperature | 11,555±50 [8] K |
Rotational velocity (v sin i) | 328±48 [8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
106 Aquarii, abbreviated 106 Aqr, is a single [11] star in the equatorial constellation of Aquarius. 106 Aquarii is the Flamsteed designation, and it also bears the Bayer designation i1 Aquarii. It has an apparent visual magnitude of +5.2, [3] making it bright enough to be viewed from the suburbs according to the Bortle Dark-Sky Scale. An annual parallax shift of 8.61 [6] milliarcseconds yields an estimated distance of around 380 light-years (120 parsecs) from Earth.
The spectrum of this star fits a stellar classification of B9 V, [4] indicating this is a B-type main sequence star. It is spinning rapidly with a projected rotational velocity of 328 km/s. [8] The star has 3 [8] times the mass of the Sun and is radiating 152 [7] times the Sun's luminosity from its photosphere at an effective temperature of 11,555 K. [8] X-ray emission with a luminosity of 6.0×1029 erg s−1 has been detected from this star. This is unusual since a B-type star normally does not have any significant X-ray emission. Instead, it may have an undetected lower mass companion. [12]
Location of 106 Aquarii (circled)
[1] | |
Observation data Epoch J2000.0 ( ICRS) Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Aquarius |
Right ascension | 23h 44m 12.07852s [2] |
Declination | –18° 16′ 36.9999″ [2] |
Apparent magnitude (V) | +5.244 [3] |
Characteristics | |
Spectral type | B9 V [4] |
U−B color index | –0.239 [3] |
B−V color index | –0.086 [3] |
Astrometry | |
Radial velocity (Rv) | +14.0 [5] km/s |
Proper motion (μ) |
RA: +27.23
[6]
mas/
yr Dec.: –2.94 [6] mas/ yr |
Parallax (π) | 8.7588 ± 0.2859 mas [2] |
Distance | 370 ± 10
ly (114 ± 4 pc) |
Absolute magnitude (MV) | −0.07 [7] |
Details | |
Mass | 3.0 [8] M☉ |
Radius | 2.7–3.2 [9] R☉ |
Luminosity | 151.88 [7] L☉ |
Surface gravity (log g) | 3.791±0.011 [8] cgs |
Temperature | 11,555±50 [8] K |
Rotational velocity (v sin i) | 328±48 [8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
106 Aquarii, abbreviated 106 Aqr, is a single [11] star in the equatorial constellation of Aquarius. 106 Aquarii is the Flamsteed designation, and it also bears the Bayer designation i1 Aquarii. It has an apparent visual magnitude of +5.2, [3] making it bright enough to be viewed from the suburbs according to the Bortle Dark-Sky Scale. An annual parallax shift of 8.61 [6] milliarcseconds yields an estimated distance of around 380 light-years (120 parsecs) from Earth.
The spectrum of this star fits a stellar classification of B9 V, [4] indicating this is a B-type main sequence star. It is spinning rapidly with a projected rotational velocity of 328 km/s. [8] The star has 3 [8] times the mass of the Sun and is radiating 152 [7] times the Sun's luminosity from its photosphere at an effective temperature of 11,555 K. [8] X-ray emission with a luminosity of 6.0×1029 erg s−1 has been detected from this star. This is unusual since a B-type star normally does not have any significant X-ray emission. Instead, it may have an undetected lower mass companion. [12]