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(101955) Bennu  ▹ 
IMPACTOR TABLE
Date MJD σ σimp dist ± width stretch p_RE exp. en PS TS
yr-mo-day (RE) (RE/σ) (MT)
2175-09-25.150 115729.150 1.340 0.000 0.23 ± 0.000 1.49e+4 4.10e-5 4.75e-2 -2.62 n/a
2175-09-25.160 115729.160 1.050 0.000 0.45 ± 0.000 1.18e+5 6.40e-6 7.40e-3 -3.43 n/a
2176-09-24.390 116094.390 2.460 0.000 0.17 ± 0.000 2.56e+4 3.10e-6 3.54e-3 -3.75 n/a
2180-09-24.360 117555.360 0.890 0.000 0.19 ± 0.000 9.67e+4 1.10e-5 1.32e-2 -3.19 n/a
2180-09-24.390 117555.390 0.530 0.000 0.12 ± 0.000 8.33e+4 2.00e-5 2.24e-2 -2.96 n/a
2181-09-24.510 117920.510 2.210 0.000 0.01 ± 0.000 1.55e+6 9.40e-8 1.08e-4 -5.28 n/a
2181-09-24.540 117920.540 1.360 0.000 0.17 ± 0.000 4.61e+5 1.40e-6 1.55e-3 -4.12 n/a
2181-09-24.550 117920.550 1.880 0.000 0.22 ± 0.000 4.15e+5 6.30e-7 7.22e-4 -4.46 n/a
2181-09-24.580 117920.580 3.410 0.000 0.57 ± 0.000 3.93e+5 9.10e-9 1.04e-5 -6.30 n/a
2181-09-24.780 117920.780 1.020 0.000 0.01 ± 0.000 3.52e+5 2.90e-6 3.29e-3 -3.80 n/a
2182-09-24.850 118285.850 -2.290 0.000 0.28 ± 0.000 3.03e+4 3.50e-6 4.08e-3 -3.71 n/a
2182-09-24.850 118285.850 -4.050 0.000 0.20 ± 0.000 3.87e+4 1.10e-8 1.24e-5 -6.23 n/a
2182-09-24.860 118285.860 -2.750 0.000 0.07 ± 0.000 2.61e+4 1.40e-6 1.63e-3 -4.11 n/a
2184-09-24.270 119016.270 4.750 0.000 0.43 ± 0.000 6.90e+4 2.40e-10 2.82e-7 -7.87 n/a
2184-09-24.360 119016.360 4.580 0.000 0.02 ± 0.000 7.07e+3 6.50e-9 7.50e-6 -6.45 n/a
2185-09-24.500 119381.500 3.580 0.000 0.08 ± 0.000 9.65e+5 2.80e-9 3.26e-6 -6.81 n/a
2185-09-24.510 119381.510 3.560 0.000 0.23 ± 0.000 1.94e+5 1.40e-8 1.60e-5 -6.12 n/a
2185-09-24.520 119381.520 3.560 0.000 0.36 ± 0.000 3.97e+5 6.40e-9 7.34e-6 -6.46 n/a
2185-09-24.590 119381.590 0.180 0.000 0.04 ± 0.000 2.55e+4 6.30e-5 7.29e-2 -2.46 n/a
2185-09-24.590 119381.590 -0.110 0.000 0.07 ± 0.000 8.34e+4 2.00e-5 2.26e-2 -2.97 n/a
2186-09-24.740 119746.740 0.690 0.000 0.00 ± 0.000 1.42e+6 9.40e-7 1.08e-3 -4.30 n/a
2186-09-24.970 119746.970 -0.190 0.000 0.54 ± 0.000 8.05e+5 1.50e-6 1.71e-3 -4.10 n/a
2186-09-25.000 119747.000 1.330 0.000 0.29 ± 0.000 7.51e+5 8.10e-7 9.35e-4 -4.36 n/a
2187-09-24.940 120111.940 -2.740 0.000 0.13 ± 0.000 7.52e+5 4.90e-8 5.69e-5 -5.58 n/a
2187-09-24.960 120111.960 -2.280 0.000 0.03 ± 0.000 1.04e+6 1.20e-7 1.37e-4 -5.19 n/a
2187-09-24.970 120111.970 -4.060 0.000 0.26 ± 0.000 1.15e+6 3.40e-10 3.96e-7 -7.73 n/a
2187-09-25.060 120112.060 -2.220 0.000 0.00 ± 0.000 2.73e+5 5.30e-7 6.05e-4 -4.55 n/a
2187-09-25.070 120112.070 -4.430 0.000 0.11 ± 0.000 4.34e+5 2.00e-10 2.31e-7 -7.97 n/a
2187-09-25.140 120112.140 1.690 0.000 0.86 ± 0.000 1.98e+4 8.30e-6 9.61e-3 -3.35 n/a
2187-09-25.210 120112.210 2.200 0.000 0.45 ± 0.000 4.84e+5 2.40e-7 2.80e-4 -4.88 n/a
2188-09-24.240 120477.240 3.280 0.000 0.98 ± 0.000 6.46e+4 1.60e-8 1.85e-5 -6.07 n/a
2188-09-24.350 120477.350 2.780 0.000 0.90 ± 0.000 1.58e+4 8.00e-7 9.19e-4 -4.37 n/a
2189-09-25.180 120843.180 3.500 0.000 0.29 ± 0.000 2.90e+6 1.10e-9 1.26e-6 -7.24 n/a
2190-09-24.790 121207.790 3.740 0.000 0.08 ± 0.000 3.19e+4 4.90e-8 5.60e-5 -5.59 n/a
2190-09-24.810 121207.810 0.310 0.000 0.01 ± 0.000 1.62e+6 1.20e-6 1.43e-3 -4.18 n/a
2190-09-24.810 121207.810 0.960 0.000 0.20 ± 0.000 1.45e+6 6.70e-7 7.77e-4 -4.45 n/a
2190-09-24.830 121207.830 4.390 0.000 0.73 ± 0.000 1.23e+4 5.00e-9 5.70e-6 -6.58 n/a
2190-09-25.460 121208.460 -1.390 0.000 0.27 ± 0.000 1.61e+6 3.50e-7 4.03e-4 -4.73 n/a
2191-09-25.130 121573.130 -0.160 0.000 0.03 ± 0.000 3.05e+5 5.40e-6 6.25e-3 -3.54 n/a
2191-09-25.180 121573.180 -0.150 0.000 0.66 ± 0.000 7.37e+5 1.40e-6 1.64e-3 -4.13 n/a
2191-09-25.320 121573.320 -0.170 0.000 0.17 ± 0.000 1.20e+6 1.30e-6 1.49e-3 -4.17 n/a
2191-09-25.380 121573.380 0.540 0.000 0.03 ± 0.000 1.39e+6 1.00e-6 1.20e-3 -4.26 n/a
2191-09-25.550 121573.550 0.900 0.000 0.73 ± 0.000 1.14e+6 5.60e-7 6.44e-4 -4.53 n/a
2192-09-24.170 121938.170 -2.550 0.000 0.17 ± 0.000 5.32e+4 5.80e-7 6.71e-4 -4.52 n/a
2192-09-24.170 121938.170 -4.440 0.000 0.21 ± 0.000 7.68e+5 1.00e-10 1.20e-7 -8.26 n/a
2192-09-24.190 121938.190 -0.210 0.000 0.08 ± 0.000 3.74e+5 8.40e-7 9.68e-4 -4.36 n/a
2192-09-24.410 121938.410 -2.210 0.000 0.01 ± 0.000 4.44e+5 3.30e-7 3.82e-4 -4.76 n/a
2193-09-24.440 122303.440 3.470 0.000 0.01 ± 0.000 1.93e+6 2.10e-9 2.45e-6 -6.96 n/a
2193-09-24.510 122303.510 3.390 0.000 0.10 ± 0.000 3.96e+5 1.30e-8 1.50e-5 -6.17 n/a
2193-09-24.600 122303.600 -1.940 0.000 0.01 ± 0.000 9.47e+3 2.80e-5 3.17e-2 -2.84 n/a
2193-09-24.630 122303.630 -2.520 0.000 0.66 ± 0.000 7.38e+5 6.00e-8 6.95e-5 -5.50 n/a
2193-09-24.740 122303.740 1.670 0.000 0.02 ± 0.000 4.86e+5 8.50e-7 9.81e-4 -4.35 n/a
2193-09-24.810 122303.810 3.470 0.000 0.02 ± 0.000 1.86e+6 2.20e-9 2.55e-6 -6.94 n/a
2193-09-25.670 122304.670 2.580 0.000 0.12 ± 0.000 2.72e+6 2.10e-8 2.41e-5 -5.96 n/a
2194-09-24.720 122668.720 -2.140 0.000 0.35 ± 0.000 9.19e+5 1.60e-7 1.80e-4 -5.09 n/a
2194-09-24.750 122668.750 3.200 0.000 0.01 ± 0.000 1.45e+4 6.90e-7 8.00e-4 -4.45 n/a
2194-09-24.790 122668.790 2.830 0.000 0.18 ± 0.000 3.35e+4 8.50e-7 9.78e-4 -4.36 n/a
2194-09-24.800 122668.800 2.920 0.000 0.57 ± 0.000 9.55e+3 1.80e-6 2.03e-3 -4.04 n/a
2195-09-25.270 123034.270 0.960 0.000 0.29 ± 0.000 2.23e+6 4.20e-7 4.78e-4 -4.67 n/a
2196-09-23.480 123398.480 3.500 0.000 0.15 ± 0.000 2.89e+6 1.20e-9 1.37e-6 -7.22 n/a
2196-09-24.210 123399.210 3.770 0.000 0.05 ± 0.000 2.97e+4 4.50e-8 5.23e-5 -5.63 n/a
2196-09-24.270 123399.270 3.820 0.000 0.64 ± 0.000 1.20e+4 6.10e-8 7.05e-5 -5.50 n/a
2196-09-24.310 123399.310 -0.090 0.000 0.00 ± 0.000 4.74e+4 3.50e-5 4.06e-2 -2.74 n/a
2196-09-24.330 123399.330 -0.070 0.000 0.15 ± 0.000 1.68e+4 9.40e-5 1.09e-1 -2.32 n/a
2197-09-24.580 123764.580 3.600 0.000 0.91 ± 0.000 4.62e+5 1.80e-9 2.12e-6 -7.03 n/a
2197-09-24.800 123764.800 -2.880 0.000 0.01 ± 0.000 8.62e+5 3.10e-8 3.54e-5 -5.81 n/a
2198-09-24.380 124129.380 3.500 0.000 0.02 ± 0.000 1.78e+6 2.10e-9 2.40e-6 -6.98 n/a
2198-09-24.550 124129.550 3.470 0.000 0.00 ± 0.000 4.85e+5 5.00e-9 5.71e-6 -6.60 n/a
2198-09-24.740 124129.740 -0.190 0.000 0.07 ± 0.000 2.08e+6 7.80e-7 8.96e-4 -4.41 n/a
2198-09-24.850 124129.850 -4.250 0.000 0.81 ± 0.000 2.81e+5 3.30e-10 3.84e-7 -7.77 n/a
2198-09-24.880 124129.880 -1.920 0.000 0.00 ± 0.000 8.95e+5 3.00e-7 3.42e-4 -4.82 n/a
2198-09-24.890 124129.890 3.500 0.000 0.25 ± 0.000 2.54e+6 1.30e-9 1.50e-6 -7.18 n/a
2198-09-24.910 124129.910 -1.450 0.000 0.40 ± 0.000 3.12e+5 1.50e-6 1.76e-3 -4.11 n/a
2198-09-24.930 124129.930 1.700 0.000 0.88 ± 0.000 1.01e+6 1.50e-7 1.69e-4 -5.13 n/a
2199-09-24.920 124494.920 -0.920 0.000 0.78 ± 0.000 6.49e+5 8.70e-7 1.00e-3 -4.36 n/a
2199-09-24.980 124494.980 -1.950 0.000 0.09 ± 0.000 9.53e+5 2.60e-7 2.94e-4 -4.89 n/a
2199-09-25.110 124495.110 3.530 0.000 0.26 ± 0.000 1.39e+6 2.10e-9 2.43e-6 -6.97 n/a
2199-09-25.110 124495.110 -1.810 0.000 0.24 ± 0.000 8.34e+5 3.50e-7 4.06e-4 -4.75 n/a

 

Based on 569 optical observations from 1999-09-11 to 2013-01-20.

Coordinates are given on a rescaled Target Plane and the radius of the
impact cross section is 1 Earth radii.

This Risk Table has not been computed with the standard CLOMON2 software but by processing the output from a Montecarlo run in the 7-dimensional space of the orbital elements and the secular perturbation on semi-major axis. This is explained in the paper Orbit and Bulk Density of the OSIRIS-REx Target Asteroid (101955) Bennu by Chesley, Farnocchia, Nolan, Vokrouhlicky, Chodas, Milani and 10 coauthors. The new results make use of Arecibo radar astrometry from September 2011, which yields a high-precision estimate of the Yarkovsky effect and in turn the bulk density of Bennu.

 





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