AR Aurigae

AR Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 18m 18.900s[1]
Declination +33° 46 02.45[1]
Apparent magnitude (V) 6.143
Characteristics
Spectral type B9.5V
U−B color index -0.18
B−V color index -0.06
Variable type Algol variable
Astrometry
Radial velocity (Rv)25.4 km/s
Proper motion (μ) RA: 16.44 ± 0.47[1] mas/yr
Dec.: -29.23 ± 0.20[1] mas/yr
Parallax (π)8.19 ± 0.47[1] mas
Distance400 ± 20 ly
(122 ± 7 pc)
Absolute magnitude (MV)6.099
Details
Mass18 M
Radius7 R
Luminosity20,000 L
Temperature10,000–30,000 K
Rotation58 km/s
0,0167514 Year
Other designations
HIP 24740, 17 Aurigae, HR 1728, AG+33 490, GSC 02398-01311, 2MASS J05181891+3346025, TYC 2398-1311-1, BD+33 1002, HD 34364, PPM Star Catalogue 70158, SAO 57858, AAVSO 0511+33.
Database references
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

AR Aurigae (AR Aur) is an eclipsing binary in the constellation Auriga. It is approximately 400 light-years from Earth.[1]

Both components are blue-white B-type or main sequence dwarfs which do not fill their Roche lobes. The system has a with a mean apparent magnitude of +6.15 but because of the eclipses, AR Aurigae is a variable star and its brightness varies from magnitude +6.15 to +6.82 with a period of 4.13 days.

References


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