Slow moving asteroid?
by Budgieye moderator
asteroid moving in front of star?
three images, red green and blue stacked together
big object in red (i band), the red colour of an orange star
big object in green (r band) , the yellow colour of an orange star
small double or moving object in blue (g band)
red + green makes yellow or orange, the big orange "star"
blue + red makes magenta, that purpley pink "star" inside the orange
blue + green makes cyan, the "green star"
So possibly, an asteroid was caught during several exposures of the blue (g) filter against a background orange star?
the background star is SDSS J022927.70-044748.0 1237679253598961861 37.36545, -4.79667