• synonyms

distance modulus


astronomy a measure of the distance, r, of a celestial object too far away to show measurable parallax. It is given by mM = 5 log(r /10), where m is its apparent magnitude (corrected for interstellar absorption) and M is its absolute magnitude


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Nearby words

distal myopathy, distally, distance, distance learning, distance medley, distance modulus, distance race, distance runner, distance university, distant, distant early warning
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012