6 Boötis

6 Boötis
	File:6 Boötis.jpg; 6 Boötis in optical light.
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Boötes
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	4.92
Characteristics
Spectral type	K4 III + M8 V
B−V Template:Engvar	Script error: No such module "val".
Astrometry
Radial velocity (Rv)	Script error: No such module "val". km/s
Proper motion (μ)	RA: +33.773 mas/yr ; Dec.: +10.842 mas/yr
Parallax (π)	7.1527±0.3659 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	−0.49
Orbit
Period (P)	Script error: No such module "val".
Eccentricity (e)	Script error: No such module "val".
Periastron epoch (T)	Script error: No such module "val".
Argument of periastron (ω); (secondary)	Script error: No such module "val".°
Semi-amplitude (K1); (primary)	Script error: No such module "val". km/s
Details
Radius	38 Template:Solar radius
Luminosity	430.124 Template:Solar luminosity
Surface gravity (log g)	1.910 cgs
Temperature	4,050 K
Metallicity [Fe/H]	−0.24 dex
Rotational velocity (v sin i)	2.0 km/s
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
	Template:Odlist
Database references
SIMBAD	data

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

6 Boötis is a binary star^[4] system in the northern constellation of Boötes,^[8] located around 460 light years away from the Sun.^[1] It has the Bayer designation e Boötis; 6 Boötis is the Flamsteed designation.^[8] The system is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.92.^[2] It is moving closer to the Earth with a heliocentric radial velocity of −3 km/s.^[2]

This is a single-lined spectroscopic binary system with an orbital period of Script error: No such module "convert". and an eccentricity of 0.4.^[4] The visible component is an evolved giant star with a stellar classification of K4 III.^[3] Its measured angular diameter is Script error: No such module "val"..^[9] At the estimated distance of the star, this yields a physical size of about 38 times the radius of the Sun.^[5] The star is radiating 430^[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,050 K.^[6] Its companion is probably a low mass red dwarf of around class M8 V.^[4]

References

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Template:Cite DR2
↑ ^a ^b ^c ^d ^e Script error: No such module "citation/CS1".
↑ ^a ^b Script error: No such module "citation/CS1".
↑ ^a ^b ^c ^d ^e Script error: No such module "citation/CS1".
↑ ^a ^b Script error: No such module "citation/CS1". The radius (R_*) is given by:
$\begin{aligned} 2 \cdot R_{*} & = \frac{(140 \cdot 2.53 \cdot 1 0^{- 3}) AU}{0.0046491 AU / R_{⨀}} \\ \approx 76.2 \cdot R_{⨀} \end{aligned}$
↑ ^a ^b ^c ^d Script error: No such module "citation/CS1".
↑ Script error: No such module "citation/CS1".
↑ ^a ^b ^c Template:Cite simbad
↑ Script error: No such module "citation/CS1".

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

Observation data Epoch J2000.0 Equinox J2000.0
File:6 Boötis.jpg 6 Boötis in optical light.
Constellation	Boötes
Right ascension	Template:RA^[1]
Declination	Template:DEC^[1]
Apparent magnitude (V)	4.92^[2]
Characteristics
Spectral type	K4 III^[3] + M8 V^[4]
B−V Template:Engvar	Script error: No such module "val".^[2]
Astrometry

Radial velocity (R_v)	Script error: No such module "val".^[1] km/s
Proper motion (μ)	RA: +33.773^[1] mas/yr Dec.: +10.842^[1] mas/yr
Parallax (π)	7.1527±0.3659 mas^[1]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (M_V)	−0.49^[2]

Orbit^[4]
Period (P)	Script error: No such module "val".
Eccentricity (e)	Script error: No such module "val".
Periastron epoch (T)	Script error: No such module "val".
Argument of periastron (ω) (secondary)	Script error: No such module "val".°
Semi-amplitude (K₁) (primary)	Script error: No such module "val". km/s
Details

Radius	38^[5] Template:Solar radius
Luminosity	430.124^[1] Template:Solar luminosity
Surface gravity (log g)	1.910^[6] cgs
Temperature	4,050^[6] K
Metallicity [Fe/H]	−0.24^[6] dex
Rotational velocity (v sin i)	2.0^[7] km/s

Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
Template:Odlist^[8]
Database references
SIMBAD	data