The table shows the maneuvers performed during this phase.
The calculations are based on NAIF's data files updated with tracking data through 31-AUG-2020 19:32:12.
S/C vertical speed
The graph shows the s/c vertical speed, the altitude and the radius vector during the Matchpoint rehearsal.
"Vspd r" is the derivative of the magnitude of the radius vector (it's the s/c vertical speed w.r.t. the center of Bennu).
"Vspd h" is the derivative of the s/c altitude above the surface of Bennu (it's the s/c vertical speed w.r.t. the sub-spacecraft point). The surface of Bennu is represented by topographic data as explained here.
A negative value of the vertical speed means that the s/c is approaching Bennu.
The x-axis on the top shows the time (in minutes) since the lowest altitude.
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Here's the spacecraft trajectory in the Bennu-centric mean ecliptic and equinox of J2000 reference frame.
The popup label shows the date, the radius vector (m), the altitude above Bennu (m), the spacecraft inertial speed (Vi, mm/s) and the speed relative to the surface of Bennu (Vs, mm/s).
Here's the same graph as above, but in the Bennu-centric Sun-North reference frame.
Instead of the inertial speed, the popup label shows the spacecraft speed in the Bennu-fixed rotating frame (Vbfr, mm/s).
The following graph shows the s/c radius vector, altitude, inertial speed and the speed relative to the surface of Bennu (click a graph legend to hide/show the related plot).