Suggested Revised H Values of Selected Asteroids: Report Number 4

We report the main results obtained by the “Magnitude Alert Project” (MAP) from 2007 to mid-2009. On 2009 May 31 the MAP Database contained 495 asteroids and 5541 measures. Observations were made of 19 minor planets on at least three oppositions for which visual and CCD measures indicated a significant difference from the predicted value. These discrepancies ranged from 0.2 to 1.7 magnitudes. We suggest a revision of their catalogued H magnitude to permit better predicted magnitudes in the future ephemerides of these objects, notably by the Minor Planet Center.