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?

  See

  Galaxy Zoo post http://www.galaxyzooforum.org/index.php?topic=274815.msg300398#msg300398

  or

  http://en.wikipedia.org/wiki/Additive_color

  Posted December 17, 2013 4:52 PM

• by c_cld

  the background star is SDSS J022927.70-044748.0 1237679253598961861 37.36545, -4.79667

  

  Posted April 23, 2014 6:02 PM