Kenneth Chang

NEOWISE is wildly wrong at times too. Would be amazing if it weren’t. It’s assuming spherical asteroids + fudge factors.

Do you have an example of NEOWISE being wildly wrong? Anything like this guy saying 39x34km asteroid is actually 6.6km?

Al the Elder mentioned asteroids with NEOWISE albedos of ~1.0. No one thinks they are really that bright.

Specifically: any example of NEOWISE measurement of the size of a known size asteroid being wildly wrong? One example?

1. Their own claim is error more than 10% half of the time,

2. They calibrated fudge factors to known asteroid sizes, so they should be close, right? Would really like someone to explain.

3. I would say an albedo of 1.0 would likely be “wildly wrong.” But can’t check independently.

Albedo 1 means perfectly reflective, 0 means perfectly black. Myhrvold complains that NWOWISE team does'nt account for albedo. /2