M

$V_{\text{flat}}$

$3\times {10}^{12}{M}_{\odot }$

255 km/s

$1\times {10}^{12}{M}_{\odot }$

188 km/s

$1\times {10}^{11}{M}_{\odot }$

82 km/s

$5\times {10}^{10}{M}_{\odot }$

71 km/s

$2\times {10}^{10}{M}_{\odot }$

45 km/s

$1\times {10}^{10}{M}_{\odot }$

37 km/s

$5\times {10}^9{M}_{\odot }$

28 km/s

$3\times {10}^8{M}_{\odot }$

9 km/s