107 Aquarii

This article is about i2 Aquarii. For other star systems with this Bayer designation, see i Aquarii.
107 Aquarii
Observation data
Epoch J2000.0 (ICRS)      Equinox J2000.0 (ICRS)
Constellation Aquarius
Right ascension 23h 46m 00.92254s[1]
Declination –18° 40′ 42.0313″[1]
Apparent magnitude (V) +5.305[2] (5.72/6.72)[3]
Characteristics
Spectral type F2 III + F2 V[3]
U−B color index +0.141[2]
B−V color index +0.287[2]
Astrometry
Radial velocity (Rv)–0.70[4] km/s
Absolute magnitude (MV)+0.97[4]
A
Proper motion (μ) RA: +132.908[5] mas/yr
Dec.: +16.011[5] mas/yr
Parallax (π)16.1378 ± 0.2169 mas[5]
Distance202 ± 3 ly
(62.0 ± 0.8 pc)
B
Proper motion (μ) RA: +139.256[6] mas/yr
Dec.: +10.050[6] mas/yr
Parallax (π)20.0193 ± 0.3991 mas[6]
Distance163 ± 3 ly
(50.0 ± 1.0 pc)
Details
A
Radius2.43[5] R☉
Luminosity16.647[5] L☉
Temperature7,482[5] K
Rotational velocity (v sin i)70[7] km/s
B
Radius1.47[6] R☉
Luminosity4.421[6] L☉
Temperature6,889[6] K
Other designations
BD–19 6506, HD 223024, HIP 117218, HR 9002, SAO 165867, WDS J23460-1841[8]
Database references
SIMBADdata

107 Aquarii (abbreviated 107 Aqr) is a double star in the equatorial constellation of Aquarius. 107 Aquarii is the Flamsteed designation, although it also bears the Bayer designation i2 Aquarii. The pair have an angular separation of 6.787 arcseconds.[3] They have a combined apparent visual magnitude of +5.305,[2] with individual magnitudes of 5.72 and 6.72.[3] The annual parallax shift measured for the two components is 16.1 mas and 20.0 mas respectively, although with significant statistical margins of error and flags for potential unreliability of both values. This indicates the system may be at a distance of 160–200 light-years (49–61 parsecs) from Earth.

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