Trojan 2018 BE7
From JPL: the asteroid has an orbit condition code = 1
| (2018 BE7) |
| Classification: Jupiter Trojan SPK-ID: 3799005 |
| Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 3 (heliocentric ecliptic J2000)
| Orbit Determination Parameters
Additional Information
|
Clones generation
100 clones generated:
| Clones | Target | ||||
|---|---|---|---|---|---|
| mean | sd | mean | sd | ||
| q | 3.94866315643 | 2.33569e-06 | 3.94866327692 | 2.3266e-06 | |
| e | 0.25182705559 | 3.4904e-07 | 0.25182704216 | 3.4777e-07 | |
| i | 30.99760355962 | 2.629533e-05 | 30.99760343632 | 2.6295e-05 | |
| peri | 92.22634545399 | 0.0002529243 | 92.22634506247 | 0.00025238 | |
| node | 359.94713097754 | 3.662284e-05 | 359.94713344984 | 3.655e-05 | |
| tp | 2457964.98984545 | 0.00199315776 | 2457964.98986459 | 0.0019892 | |
Backward simulation
Mercury 6 simulator by J.E. Chambers.
Initialization parameters:
)O+_06 Integration parameters (WARNING: Do not delete this line!!)
) Lines beginning with `)' are ignored.
)---------------------------------------------------------------------
) Important integration parameters:
)---------------------------------------------------------------------
algorithm (MVS, BS, BS2, RADAU, HYBRID etc) = BS
start time (days)= 2459167.50000
stop time (days) = -1d8
output interval (days) = 100
timestep (days) = 0.05
accuracy parameter=1.d-12
...
ejection distance (AU)= 100
Simulation results
78% of the clones ( identified as BE_<xx> ) entered the solar system from a distance greater than 100 AU within the simulation time (stop time : -10^8 JD)
Integration parameters
----------------------
Algorithm: Bulirsch-Stoer (general)
Integration start epoch: 2459167.5000000 days
Integration stop epoch: -100000000.0000000
Output interval: 100.000
Output precision: medium
Includes collisions: no
Includes fragmentation: no
Includes relativity: no
Includes user-defined force routine: no
Number of Big bodies: 12
Number of Small bodies: 100
Integration details
-------------------
Initial energy: -3.32260E-08 solar masses AU^2 day^-2
Initial angular momentum: 6.08218E-05 solar masses AU^2 day^-1
WARNING: Main integration is backwards.
Integrating massive bodies and particles up to the same epoch.
Beginning the main integration.
...
BE_75 ejected at -12218 9 1.35248
BE_92 ejected at -19412 11 17.41604
BE_62 ejected at -27272 12 8.98265
BE_48 ejected at -29083 8 10.12411
BE_26 ejected at -29810 5 24.39901
BE_30 ejected at -31660 2 20.57527
BE_3 ejected at -36631 3 30.19623
BE_74 ejected at -40730 3 31.89730
BE_32 ejected at -41411 9 21.30449
BE_91 ejected at -45755 6 5.12761
BE_76 ejected at -49601 6 17.02242
BE_65 ejected at -50089 6 3.09469
BE_18 ejected at -51711 10 15.31074
BE_95 ejected at -52639 11 8.04038
BE_42 ejected at -53719 8 9.81726
BE_45 ejected at -59108 1 13.03557
BE_99 ejected at -63402 9 4.48069
BE_31 ejected at -64153 1 15.57278
BE_51 ejected at -66098 6 18.25806
BE_57 ejected at -66273 3 19.75739
BE_46 ejected at -67349 11 16.13478
BE_7 ejected at -68133 2 19.69023
BE_49 ejected at -68227 4 8.90096
BE_10 ejected at -78961 2 10.32539
BE_37 ejected at -93120 10 31.68858
BE_13 ejected at -94396 8 15.61842
BE_19 ejected at -103866 11 6.04508
BE_43 ejected at -104270 5 14.15876
BE_11 ejected at -105165 5 30.99075
BE_24 ejected at -105839 5 17.47865
BE_81 ejected at -105975 5 10.88234
BE_83 ejected at -106419 6 24.67149
BE_59 ejected at -108037 1 20.81212
BE_64 ejected at -110869 10 25.74317
BE_73 ejected at -115412 1 15.69684
BE_25 ejected at -115968 5 31.71713
BE_15 ejected at -118109 7 24.20575
BE_8 ejected at -118596 7 21.54085
BE_89 ejected at -118636 5 17.30687
BE_58 ejected at -121508 9 26.20928
BE_39 ejected at -121632 6 5.79821
BE_1 ejected at -122384 7 7.48511
BE_96 ejected at -125601 8 15.72580
BE_85 ejected at -127587 5 14.51116
BE_16 ejected at -130643 3 7.00000
BE_88 ejected at -131935 4 8.27266
BE_72 ejected at -135082 7 7.70686
BE_52 ejected at -141113 4 2.43763
BE_86 ejected at -143781 6 19.18534
BE_100 ejected at -144761 4 15.49307
BE_6 ejected at -153849 11 26.34936
BE_50 ejected at -154675 12 26.26650
BE_71 ejected at -162833 5 21.74853
BE_80 ejected at -165439 6 9.18063
BE_94 ejected at -165472 7 28.00626
BE_60 ejected at -167662 3 24.45334
BE_27 ejected at -170278 6 11.01657
BE_82 ejected at -180753 4 20.31714
BE_70 ejected at -188838 9 26.17690
BE_5 ejected at -190033 3 28.77207
BE_84 ejected at -190582 3 23.27674
BE_97 ejected at -190655 11 7.53847
BE_22 ejected at -195628 5 4.49071
BE_69 ejected at -199888 11 16.18723
BE_61 ejected at -200875 7 16.32123
BE_44 ejected at -201652 7 16.77930
BE_28 ejected at -204390 3 15.70320
BE_14 ejected at -219247 3 3.06441
BE_34 ejected at -228317 8 12.23273
BE_29 ejected at -235978 6 27.57291
BE_87 ejected at -236589 8 27.14224
BE_2 ejected at -236739 7 4.31758
BE_53 ejected at -241751 6 6.24507
BE_40 ejected at -249700 1 10.37648
BE_68 ejected at -253928 4 16.91178
BE_47 ejected at -266739 3 1.08514
BE_56 ejected at -271215 8 6.65938
BE_63 ejected at -273087 10 24.29695
Integration complete.
Fractional energy change due to integrator: 4.12821E-10
Fractional angular momentum change: 4.74875E-12
10 clones entered the solar system on a hyperbolic trajectory:
ast Vinf
1: BE_3.aei 8.6810536
2: BE_10.aei 5.6980954
3: BE_28.aei 5.6123296
4: BE_26.aei 5.1126959
5: BE_30.aei 4.3776451
6: BE_40.aei 3.5723970
7: BE_88.aei 3.2175869
8: BE_45.aei 2.1383302
9: BE_53.aei 1.7047030
10: BE_19.aei 0.7018466
In the plot below, the simulation time has been divided into slots: in every slot, the minimum perihelium distance is calculated for every asteroid, and the resulting distribution is plotted as a boxblot.
similar approach for all other parameters
Perihelium q
Eccentricity e
Inclination i
Argument of Perihelium w
Ascending Node om
w + om
Kind Regards,
Alessandro Odasso
