magnitude at opposition

magnitude at opposition

A measure of the brightness of a planet or asteroid when at opposition; it corresponds, normally, to the maximum brightness attained by the object during the apparition, since it is then viewed at its fullest phase and is near its closest point to the Earth.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
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(km) 4.06 x [10.sup.5] Visual magnitude at opposition -12.74 Revolution period (days) 27.3217 Mean orbital velocity (km x [s.sup.-1]) 1.023 Recession rate from Earth (cm x [yr.sup.-1]) 3.8 Dates of Ramadan & Shawwal for 2019