HD 188405

HD 188405
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquila
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	6.51 (6.94 + 7.98)‍
Characteristics
Spectral type	F2V
U−B Template:Engvar	+0.05
B−V Template:Engvar	+0.39
Astrometry
Radial velocity (Rv)	−13.10 km/s
Proper motion (μ)	RA: +16.58 mas/yr ; Dec.: −60.18 mas/yr
Parallax (π)	12.22±0.84 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	+1.94
Orbit
Period (P)	425±22 yr
Semi-major axis (a)	1.085±0.024″
Eccentricity (e)	0.9414±0.0020
Inclination (i)	103.05±0.84°
Longitude of the node (Ω)	264.03±0.77°
Periastron epoch (T)	B 1974.28±0.23
Argument of periastron (ω); (secondary)	327.9±1.7°
Details
HD 188405 A
Mass	1.4 Template:Solar mass
Radius	2.8 Template:Solar radius
Luminosity	13 Template:Solar luminosity
Temperature	6,646 K
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
	BD−07°5102, HD 188405, HIP 98038, HR 7599, SAO 143911
Database references
SIMBAD	data

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

HD 188405 is a binary star in the equatorial constellation of Aquila. The pair have an orbital period of roughly 425 years and an angular separation of 1.085″.^[8]

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)	6.51^[3] (6.94 + 7.98)‍^[4]
Characteristics
Spectral type	F2V^[4]
U−B Template:Engvar	+0.05^[3]
B−V Template:Engvar	+0.39^[3]
Astrometry

Radial velocity (R_v)	−13.10^[5] km/s
Proper motion (μ)	RA: +16.58^[2] mas/yr Dec.: −60.18^[2] mas/yr
Parallax (π)	12.22±0.84 mas^[2]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (M_V)	+1.94^[1]

Orbit^[6]
Period (P)	425±22 yr
Semi-major axis (a)	1.085±0.024″
Eccentricity (e)	0.9414±0.0020
Inclination (i)	103.05±0.84°
Longitude of the node (Ω)	264.03±0.77°
Periastron epoch (T)	B 1974.28±0.23
Argument of periastron (ω) (secondary)	327.9±1.7°
Details
HD 188405 A
Mass	1.4^[7] Template:Solar mass
Radius	2.8^[7] Template:Solar radius
Luminosity	13^[7] Template:Solar luminosity
Temperature	6,646^[7] K

Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
BD−07°5102, HD 188405, HIP 98038, HR 7599, SAO 143911
Database references
SIMBAD	data