Photometric data for 2020 & 2021 perihelion JFCs

The csv files for all 2020 and 2021 perihelion JFCs detectable by the Asteroid Terrestrial-impact Last Alert System (ATLAS). image - image identifier in ATLAS mjd - Modified Julian Date rh - Heliocentric distance (au) delta - Geocentric distance (au) alpha - Phase angle (°) appix - aperture in pixels x - X position of object centre (pixels) y - Y position of object centre (pixels) counts - Counts sky - Sky background err - Sky background uncertainty snr - Signal to noise ratio mag - Magnitude mag_err - Magnitude uncertainty afp - Afρ (cm) afp_err - Afρ uncertainty (cm) afp_zero - A(0°)fρ (cm) afp_zero_err - A(0°)fρ uncertainty (cm) filter - ATLAS filter (c/o) mdust - very rough estimate of mass loss rate (kg/s) - assuming albedo = 0.1, dust density = 1000g/cm^3, grain radius = 1μm. Please refer to the in-text upper limits of mass loss rate and the assumed values associated with the calculation in-text. mdust_err - uncertainty in mass loss rate