In astronomy, absolute magnitude is a measure of the luminosity of a celestial object on an inverse logarithmic astronomical magnitude scale; the more luminous an object, the lower its magnitude numbe

The Comet of 1729, also known as C/1729 P1 or Comet Sarabat, was an assumed parabolic comet with an absolute magnitude of −3, possibly the brightest ever observed for a comet; it is therefore consider