Chi Aquilae

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**Chi Aquilae**
Observation data Epoch J2000
Image:Chi Aquilae.jpg Chi Aquilae
Constellation (pronunciation)	Aquila
Right ascension	19h 42m 34.0s
Declination	+11° 49' 36"'
Apparent magnitude (V)	5.28
Characteristics
Spectral type	G0:+A3V
U-B color index	-0.04
B-V color index	0.57
Variable type	None
Astrometry
Radial velocity (R_v)	-21.6 km/s
Proper motion (μ)	RA: 3.43 mas/yr Dec.: -10.49 mas/yr
Parallax (π)	4.34 ± 2.0 mas
Distance	approx. 800 ly (approx. 200 pc)
Absolute magnitude (M_V)	5.833
Visual binary orbit
Companion	χ Aquilae B
Semimajor axis (a)	0.4"
Visual binary orbit
Companion	χ Aquilae C
Semimajor axis (a)	81.6"
Inclination (i)	48°
Visual binary orbit
Companion	χ Aquilae D
Semimajor axis (a)	9.4"
Inclination (i)	317°
Visual binary orbit
Companion	χ Aquilae E
Semimajor axis (a)	140"
Eccentricity (e)	275
Details
Mass	? M_☉
Radius	? R_☉
Luminosity	? L_☉
Temperature	? K
Metallicity	?
Rotation	?
Age	? years
Other designations
47 Aquilae, HR 7497, HD 186203, BD+11°3955A, HIP 96957, SAO 105168, GC 27272, ADS 12808, CCDM 19425+1150.
Database references
SIMBAD	data
Database references
SIMBAD	data

Chi Aquilae (χ Aql / χ Aquilae) is a binary star in the constellation Aquila. It is approximately 750 light-years from Earth.

The primary component, χ Aquilae A, is a yellow G-type giant with an apparent magnitude of +5.6. It's companion, χ Aquilae B, is a white A-type main sequence dwarf with an apparent magnitude of +6.8. The two stars are separated by 0.6 arcseconds and their combined apparent brightness is +5.28 magnitudes.

Aquila Constellation

[edit] Components

NAME	Right ascension	Declination	Apparent magnitude (V)	Spectral type	Database references
χ Aquilae B	19^h 42^m 34.0093^s	+11° 49' 35.698	6.7	A3V	Simbad
χ Aquilae C (BD+11 3955C)	19^h 42^m 37.9^s	+11° 50' 31	12.3		Simbad
χ Aquilae D					Simbad
χ Aquilae E					Simbad