2016年5月23日 星期一

Former Microsoft CTO Nathan Myhrvold Challenges NEOWISE Data

Asteroid thermal modeling in the presence of reflected sunlight with an application to WISE/NEOWISE observational data

"As a result, the new analysis finds asteroid diameter and other physical properties that have large differences from published NEOWISE results, with greatly increased error estimates. NEOWISE results have a claimed ±10% accuracy for diameter estimates, but this is unsupported by any calculations and undermined by irregularities in the NEOWISE results. Diameter estimates from bootstrap calculations appears to be no more than ±29.5% accurate when compared to diameters from radar, stellar occultations and spacecraft. NEOWISE errors for parameters like visible band albedo pv and near-IR albedo pIR1 and pIR2 are even higher, calling into question their utility."

Repurposed NEOWISE Spacecraft Observes and Discovers Asteroids, earlier post



from NASA Watch http://ift.tt/1XOHr0f
via IFTTT

沒有留言:

張貼留言