Object name: IC0431
Designation(s): IC0431, IC0432,
IC 431 and IC 432 are two reflection nebulae just northwest of the far more famous Flame Nebula, NGC 2024 in Orion. While it might appear they are related the Hipparcos data for the central stars of each tells a different story. IC 431 to the west (right) has at its core the B3Vn star HD 37674 which Hipparcos puts at 1,059 light-years. Brighter and larger IC 432 to the east (left) has at its center B2IV HD 37776 aka V 901 Orionis which Hipparcos puts at 1,664 light-years. So not only does the nebula appear larger it really is even larger than the apparent difference in size would suggest.