HD 174569

HD 174569
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquila
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	6.36
Characteristics
Spectral type	K5III + K3III-IV
U−B Template:Engvar	+1.63
B−V Template:Engvar	+1.44
Astrometry
A
Radial velocity (Rv)	Script error: No such module "val". km/s
Proper motion (μ)	RA: +8.168 mas/yr ; Dec.: +5.959 mas/yr
Parallax (π)	4.4674±0.0200 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
B
Radial velocity (Rv)	Script error: No such module "val". km/s
Proper motion (μ)	RA: +8.623 mas/yr ; Dec.: +6.146 mas/yr
Parallax (π)	4.4157±0.0232 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
Details
A
Mass	1.2 Template:Solar mass
Radius	37 Template:Solar radius
Luminosity	318 Template:Solar luminosity
Surface gravity (log g)	1.52 cgs
Temperature	3,922 K
Metallicity [Fe/H]	0.51 dex
B
Mass	1.4 Template:Solar mass
Radius	18 Template:Solar radius
Luminosity	141 Template:Solar luminosity
Surface gravity (log g)	2.46 cgs
Temperature	4,808 K
Metallicity [Fe/H]	−0.09 dex
Other designations
	BD+10°3685, HD 174569, HIP 92475, HR 7099, SAO 104170.
Database references
SIMBAD	data
	A
	B

Script error: No such module "Check for unknown parameters".

HD 174569 is a spectroscopic binary^[4] star system in the equatorial constellation of Aquila. Based on stellar parallax measurements by Gaia, it is about 730-740 light-years (400 parsecs) away.^[5]^[7]

Both components are giant stars that exhausted their hydrogen supply. Star A has a class K5III, while star B has a class K3III-IV.^[4]

References

Script error: No such module "Check for unknown parameters".

Observation data Epoch J2000 Equinox J2000
Constellation	Aquila^[1]
Right ascension	Template:RA^[2]
Declination	Template:DEC^[2]
Apparent magnitude (V)	6.36^[3]
Characteristics
Spectral type	K5III + K3III-IV^[4]
U−B Template:Engvar	+1.63^[3]
B−V Template:Engvar	+1.44^[3]
Astrometry
A
Radial velocity (R_v)	Script error: No such module "val".^[5] km/s
Proper motion (μ)	RA: +8.168 mas/yr^[5] Dec.: +5.959 mas/yr^[5]
Parallax (π)	4.4674±0.0200 mas^[5]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
B
Radial velocity (R_v)	Script error: No such module "val".^[6] km/s
Proper motion (μ)	RA: +8.623 mas/yr^[2] Dec.: +6.146 mas/yr^[2]
Parallax (π)	4.4157±0.0232 mas^[7]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Details
A
Mass	1.2^[8] Template:Solar mass
Radius	37^[5] Template:Solar radius
Luminosity	318^[5] Template:Solar luminosity
Surface gravity (log g)	1.52^[8] cgs
Temperature	3,922^[8] K
Metallicity [Fe/H]	0.51^[8] dex
B
Mass	1.4^[8] Template:Solar mass
Radius	18^[7] Template:Solar radius
Luminosity	141^[7] Template:Solar luminosity
Surface gravity (log g)	2.46^[8] cgs
Temperature	4,808^[8] K
Metallicity [Fe/H]	−0.09^[8] dex
Other designations
BD+10°3685, HD 174569, HIP 92475, HR 7099, SAO 104170.
Database references
SIMBAD	data
	A
	B