Conversion of H to a diameter for a specific object requires knowledge ofthe object's albedo. This quantity is not known for most objects, so thediameters listed here are given as ranges: the smallest value correspondingto an albedo of 0.5 (intended for icy objects), the middle valuecorresponding to an albedo of 0.25 and the larger to an albedo of 0.05. Mostmain-belt minor planet will have albedos in the range 0.05 to 0.25.If a specific object has an albedo < 0.05, the diameter will be largerthan the upper limit listed here.
Table: Probable diameter ranges for various H values and albedo values. H Albedo H H 0.50 0.25 0.05 -2.0 4700 - 6700 - 14900 13.0 28.0 -1.5 3700 - 5300 - 11800 13.5 28.5 -1.0 3000 - 4200 - 9400 14.0 29.0 -0.5 2400 - 3300 - 7500 14.5 29.5 0.0 1900 - 2600 - 5900 15.0 30.0 0.5 1500 - 2100 - 4700 15.5 30.5 1.0 1200 - 1700 - 3700 16.0 31.0 1.5 940 - 1300 - 3000 16.5 31.5 2.0 750 - 1050 - 2400 17.0 32.0 2.5 590 - 840 - 1900 17.5 32.5 3.0 470 - 670 - 1500 18.0 33.0 3.5 370 - 530 - 1200 18.5 33.5 4.0 300 - 420 - 940 19.0 34.0 4.5 240 - 330 - 740 19.5 34.5 5.0 190 - 260 - 590 20.0 35.0 5.5 150 - 210 - 470 20.5 35.5 6.0 120 - 170 - 370 21.0 36.0 6.5 95 - 130 - 300 21.5 36.5 7.0 75 - 110 - 240 22.0 37.0 7.5 60 - 85 - 190 22.5 37.5 8.0 45 - 65 - 150 23.0 38.0 8.5 40 - 50 - 120 23.5 38.5 9.0 30 - 40 - 95 24.0 39.0 9.5 25 - 35 - 75 24.5 39.5 10.0 19 - 25 - 60 25.0 40.0 10.5 15 - 20 - 50 25.5 40.5 11.0 12 - 17 - 37 26.0 41.0 11.5 9 - 13 - 30 26.5 41.5 12.0 7 - 11 - 24 27.0 42.0 12.5 6 - 8 - 19 27.5 42.5 13.0 5 - 7 - 15 28.0 43.0 13.5 4 - 5 - 12 28.5 43.5 14.0 3 - 4 - 9 29.0 44.0 14.5 2 - 3 - 7 29.5 44.5 15.0 2 - 3 - 6 30.0 45.0 15.5 1 - 2 - 5 30.5 45.5 16.0 1 - 2 - 4 31.0 46.0 16.5 1 - 1 - 3 31.5 46.5 17.0 1 - 1 - 2 32.0 47.0 17.5 1 - 1 - 2 32.5 47.5