45 Aurigae

45 Aurigae
Observation data; Epoch J2000 Equinox J2000
Constellation	Auriga
Right ascension	Template:RA
Declination	Template:DEC
Apparent magnitude (V)	5.34
Characteristics
Spectral type	F5 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: +21.98 mas/yr ; Dec.: -88.69 mas/yr
Parallax (π)	16.89±0.30 mas
Distance	Template:Rnd ± Template:Rnd ly ; (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)	1.48
Orbit
Period (P)	6.5011 d
Eccentricity (e)	0.000
Periastron epoch (T)	2444496.869 ± 0.006 JD
Argument of periastron (ω); (secondary)	0.000°
Semi-amplitude (K1); (primary)	Script error: No such module "val". km/s
Details
45 Aur A
Mass	1.20 Template:Solar mass
Luminosity	21.72 Template:Solar luminosity
Surface gravity (log g)	Script error: No such module "val". cgs
Temperature	Script error: No such module "val". K
Metallicity [Fe/H]	Script error: No such module "val". dex
Rotational velocity (v sin i)	14 km/s
Age	1.561 Gyr
Metallicity [Fe/H]	{{{metal_fe2}}} dex
Other designations
	Template:Odlist
Database references
SIMBAD	data

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

45 Aurigae or PLX 1468.2 is a binary star^[5] system in the northern constellation of Auriga. It has an apparent visual magnitude of 5.34,^[2] making it visible to the naked eye under suitable viewing conditions. An annual parallax shift of 16.89 mas as seen from Earth's orbit indicates the system is located about 193 light years from the Sun.

This is a close, single-lined spectroscopic binary with a circularized orbit with a short period of 6.5 days.^[5] They have a mean angular separation of 0.963 mas.^[9] The visible component has a stellar classification of F5 V,^[3] matching an F-type main-sequence star that is generating energy through hydrogen fusion at it core. It is about 1.6^[6] billion years old and is spinning with a projected rotational velocity of 14 K.^[7] It has 1.2^[6] times the mass of the Sun and is radiating 22^[2] times the Sun's luminosity from its photosphere at an effective temperature of around 6,489 K.^[6] The secondary has a minimum mass of 42% of the Sun's mass.^[9]

References

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

Observation data Epoch J2000 Equinox J2000
Constellation	Auriga
Right ascension	Template:RA^[1]
Declination	Template:DEC^[1]
Apparent magnitude (V)	5.34^[2]
Characteristics
Spectral type	F5 V^[3]^[2]
B−V Template:Engvar	Script error: No such module "val".^[2]
Astrometry

Radial velocity (R_v)	Script error: No such module "val".^[4] km/s
Proper motion (μ)	RA: +21.98^[1] mas/yr Dec.: -88.69^[1] mas/yr
Parallax (π)	16.89±0.30 mas^[1]
Distance	Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc)
Absolute magnitude (M_V)	1.48^[2]

Orbit^[5]
Period (P)	6.5011 d
Eccentricity (e)	0.000
Periastron epoch (T)	2444496.869 ± 0.006 JD
Argument of periastron (ω) (secondary)	0.000°
Semi-amplitude (K₁) (primary)	Script error: No such module "val". km/s
Details
45 Aur A
Mass	1.20^[6] Template:Solar mass
Luminosity	21.72^[2] Template:Solar luminosity
Surface gravity (log g)	Script error: No such module "val".^[6] cgs
Temperature	Script error: No such module "val".^[6] K
Metallicity [Fe/H]	Script error: No such module "val".^[2] dex
Rotational velocity (v sin i)	14^[7] km/s
Age	1.561^[6] Gyr

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