■ [blazar] PKS 1510-089 : Brightening
Top figure shows the light curve in V band and V-J color variation of the object. The object has brightened since JD 2454900 and V-J color has become redder. Bottom figure shows the light curve in V band and temporal variations of the polarization degree in V and J band. Polarization degree in J band has always been higher than that in V band.