LS I +61 303

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LS I +61 303
Observation data
Epoch J2000
Constellation
(pronunciation)
Cassiopeia
Right ascension 02h 40m 31.6657s
Declination +61° 13' 45.604"'
Apparent magnitude (V) 10.8
Characteristics
Spectral type B0Ve
U-B color index ?
B-V color index ?
Variable type None
Astrometry
Proper motion (μ) RA: 0.62 mas/yr
Dec.: 1.63 mas/yr
Parallax (π) 5.65 ± 2.28 mas
Distance approx. 600 ly
(approx. 180 pc)
Absolute magnitude (MV) 11.4
Details
Mass ? M
Radius ? R
Luminosity ? L
Temperature ? K
Metallicity ?
Rotation ?
Age ? years
Other designations
V* V615 Cas, GSC 04047-01917, 1RXS J024033.5+611358, HIC 12469, TYC 4047-1917-1, HIP 12469.

LS I +61 303 is a microquasar which emits VHE (Very High Energy) gamma rays. It is only one of three known star systems that produce such energetic rays. The other two systems are PSR B1259-63 and LS 5039.

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