Pinboard & Memo
You find here some of my own memorandum notices or small working notices. The main purpose is to serve like a web scratchpad for myself.
Asteroid Magnitudes
Sloan r = V  0.24 (pretty closely)
Asteroid Albedos
Ctype (~75% of MBA) : p=0.03
Stype (~17% of MBA) : p=0.100.22 (av = 0.16)
Mtype (~08% of MBA) : p=0.100.18 (av = 0.14)
Thus if no taxclass is known a mean value of 0.06 can be assumed.
Asteroid Densities
For many asteroids a value of ρ~2 g/cm^{3} has been assumed in the past. However, a better guess can be obtained by taking into account the asteroid's spectral type. Krasinsky et al (2002) gives calculations for the mean densities of C, S, and M class asteroids as 1.38, 2.71, and 5.32 g/cm^{3}. "C" includes Tholen classes C, D, P, T, B, G, F. "S" includes Tholen classes S, K, Q, V, R, A, E.
Ref: Krasinsky, G. A.; Pitjeva, E. V.; Vasilyev, M. V.; Yagudina, E. I. (2002). Hidden Mass in the Asteroid Belt. Icarus 158 (1)
Last edited: July 15, 2016, 18:55
