Multi-Survey Asteroid Albedo Catalog: IRAS × AKARI × GAPC (1983–2017)

Unified albedo and diameter catalog for 128,885 main-belt asteroids combining three independent surveys spanning 34 years: - IRAS SIMPS (1983, Tedesco et al. 2002): 2,112 objects- AKARI IRC (2006-2011, Usui et al. 2011): 4,416 objects - GAPC/Gaia DR3 (2014-2017, Scheibenpflug 2026): 128,885 objects- Objects with both IRAS and AKARI: 1,772 Key finding: IRAS and AKARI agree at 13.8% median scatter with zero systematic offset over 25 years. Gaia HG-fit albedos show ~25% scatter vs both thermal surveys, attributable to phase angle coverage limitations. The 344 objects where IRAS and AKARI disagree by >30% are candidate targets for genuine albedo variability (active asteroids, tumbling rotators).