Index:  01) Coordinate time (GM/c^3) 11) BL r coordinate (GM/c^2) 21) Black hole charge (M/√(K/G)) 31) Framedragging observed rate (c^3/G/M)  02) Proper time (GM/c^3) 12) BL φ coordinate (degrees) 22) Particle charge (m/√(K/G)) 32) Framedragging local velocity (c) http://kerr.newman.yukterez.net (Simon Tyran, Vienna) Images are free under CC BY-SA 4  03) Total time dilation (dt/dτ) 13) BL θ coordinate (degrees) 23) BH Irreducible mass (M) 33) Framedragging cartesian velocity (c)  04) Grav. time dilation (dt/dτ) 14) dr/dτ (c) 24) Kinetic energy (mc^2) 34) Proper velocity (c, dl/dτ) The neutral particle (left double image) escapes with a locally purely radial velocity  05) Local energy (dt/dτ, mc^2) 15) dφ/dτ (c^3/G/M) 25) Potential energy (mc^2) 35) Escape velocity (c) and keeps a constant Boyer Lindquist θ while the charged particle (right double image)  06) Cartesian radius (GM/c^2) 16) dθ/dτ (c^3/G/M) 26) Total energy (mc^2) 36) Observed velocity (c, dl/dt) changes θ and starts with a local velocity component in the φ direction. The latter is  07) x Axis (GM/c^2) 17) d^2r/dτ^2 (c^4/G/M) 27) Carter constant (GMm/c)^2 37) Local r velocity (c) required for a charged test particle in the vicinity of a spinning and charged central  08) y Axis (GM/c^2) 18) d^2φ/dτ^2 (c^6/G^2/M^2) 28) φ angular momentum Lz (GMm/c) 38) Local θ velocity (c) mass if the test particle has zero axial angular momentum Lz=0 (neutral particles have  09) z Axis (GM/c^2) 19) d^2θ/dτ^2 (c^6/G^2/M^2) 29) θ angular momentum (GMm/c) 39) Local φ velocity (c) Lz=0 only if the local velocity in the φ direction is also 0).  10) travelled distance (GM/c^2) 20) Spin parameter (GM^2/c) 30) Radial momentum (mc) 40) Total local velocity (c)