^aTelescope and instrument. ^bPixel scale in arcsec per pixel. ^cNumber of exposures taken. ^dHeliocentric distance in AU. ^eGeocentric distance in AU. ^f Solar phase angle (Sun-Target-Observer) in degrees. ^gTrue anomaly in degrees. ^hApparent R-band magnitude measured with a 2300 km physical radius.ⁱ Absolute R-band magnitude assuming IAU H-G phase function where G = 0.15 ± 0.12. ^lEstimated dust mass in kg assuming ρ_d ~ 2500 kg m⁻³.

Notes: Data presented in the last three columns are the results of our own photometric analysis. Data from dates marked with asterisks were previously published in Hsieh et al. (2012b) (*), Hsieh (2014) (**), and Hsieh & Sheppard (2015) (***). The HST dataset has been previously analyzed in Jewitt et al. (2016). For WISE, 19 images were obtained in W1 and W2 bands, and 18 in W3 and W4 bands. For Spitzer, 70 images were taken in ch1 and 71 in ch2. For HST, the apparent V-band magnitude was measured inside a 3000 km physical radius, and the absolute V-band magnitude was derived assuming an IAU H-G phase function with G = 0.15 ± 0.12.