107 Aquarii

This article is about i² Aquarii. For other star systems with this Bayer designation, see i Aquarii.

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.

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]
Distance	202 ± 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]
Distance	163 ± 3 ly (50.0 ± 1.0 pc)
Details
A
Radius	2.43[5] R☉
Luminosity	16.647[5] L☉
Temperature	7,482[5] K
Rotational velocity (v sin i)	70[7] km/s
B
Radius	1.47[6] R☉
Luminosity	4.421[6] L☉
Temperature	6,889[6] K
Other designations
BD−19 6506, HD 223024, HIP 117218, HR 9002, SAO 165867, WDS J23460-1841[8]
Database references
SIMBAD	data