| # |
Burn time |
DV |
Dt |
a |
Lat |
Lon |
Alt |
Vbfr |
| M30D | 2019-09-21 17:00:00.000 | 112.4 | 14.479 | 7.76 | 14.4 | 0.9 | 1546 | 0.71 |
| M31D | 2019-09-24 16:45:29.000 | 29.6 | 4.010 | 7.38 | -81.3 | 191.0 | 6232 | 0.38 |
| M31D | 2019-09-24 17:14:31.000 | 29.5 | 4.020 | 7.34 | -81.6 | 150.0 | 6229 | 0.39 |
| M32D | 2019-09-28 17:00:00.000 | 60.2 | 7.911 | 7.62 | 80.7 | 232.3 | 6216 | 0.43 |
| M1R | 2019-10-03 17:00:00.000 | 54.1 | 7.210 | 7.50 | 42.1 | 129.4 | 6806 | 2.12 |
| M2R | 2019-10-06 01:00:00.000 | 50.1 | 6.680 | 7.50 | -37.4 | 317.5 | 1202 | 0.41 |
| M3R | 2019-10-08 17:00:00.000 | 57.9 | 7.606 | 7.61 | 67.3 | 92.8 | 7535 | 1.20 |
| M4R | 2019-10-10 17:00:00.000 | 72.3 | 9.463 | 7.64 | -0.0 | 85.7 | 6768 | 2.84 |
| M5R | 2019-10-13 01:00:00.000 | 147.8 | 18.912 | 7.82 | 8.9 | 246.0 | 804 | 0.36 |
| M6R | 2019-10-15 17:00:00.000 | 64.5 | 8.487 | 7.60 | 5.7 | 92.2 | 2643 | 1.18 |
| M7R | 2019-10-17 17:00:00.261 | 32.1 | 4.354 | 7.38 | 0.3 | 57.5 | 6241 | 2.64 |
| M8R | 2019-10-20 01:00:00.240 | 145.4 | 18.593 | 7.82 | 10.5 | 214.4 | 780 | 0.34 |
| M9R | 2019-10-22 17:00:00.209 | 33.9 | 4.599 | 7.37 | 67.4 | 8.7 | 7468 | 1.19 |
| M10R | 2019-10-24 17:00:00.000 | 48.2 | 6.417 | 7.51 | 35.1 | 1.5 | 6772 | 2.32 |
| M11R | 2019-10-27 01:00:00.000 | 139.4 | 17.823 | 7.82 | -21.9 | 158.6 | 607 | 0.27 |
| M12R | 2019-10-29 17:00:00.000 | 64.8 | 8.531 | 7.60 | 0.1 | 235.5 | 9389 | 3.91 |
| M13R | 2019-10-31 23:03:48.828 | 39.3 | 5.279 | 7.45 | 87.9 | 189.1 | 1196 | 0.08 |
The table shows the spacecraft maneuvers during the
Reconnaissance phase (M30D, M31D and M32D maneuvers resume the numbering from the
Detailed Survey phase).
In addition to the information explained
here, the table also shows the location of the spacecraft over the surface of Bennu and the speed (m/s) in the Bennu fixed (rotating) reference frame.
The calculations are based on the NAIF's data file updated with tracking data through 01-NOV-2019 16:31:31.
The M31D maneuver is performed in two steps, see next graph.
Here's the detailed view of the M31D maneuver in the Bennu-centric mean ecliptic and equinox of J2000 reference frame.
The popup label shows the date (with a 1-minute step size), the radius vector (m) and the orbital speed (mm/s).
We see that the first burn varies the trajectory of the spacecraft with a small variation of the magnitude of the orbital velocity, while the second burn varies the magnitude of the velocity vector with a modest variation of the trajectory.
Here's the spacecraft trajectory from September 20 to November 2 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) and the spacecraft orbital speed (mm/s).
The smallest and the largest radius vector are 859 m and 9651 m.
Here's the same graph as above, but in the Bennu-centric Sun-North reference frame.
This frame is useful to show that the spacecraft passes several times over the same position relative to the Sun.
In this non-inertial reference frame, the spacecraft speed (shown by the popup label) is slightly different from the one shown in the previous graph (whose reference frame is inertial).