Catalogue of the Solar System Small Bodies Orbital Evolution
Catalogue of the Solar System Small Bodies Orbital Evolution
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Asteroid General Data
2021 SD
2
General information
Preliminary designation
2021 SD
2
Group
Apollo
Absolute magnitude
26.85
Approximate diameter (m)
11
Approximate mass (kg)
2.67·10
6
Number of observations
26
Arc length (days)
8
Approaches
No approaches found
Orbit initial data
Date of initial data
06/09/2026
M
– mean anomaly (degrees)
223.351522
a
– orbit major semiaxis (astronomical units)
1.15765400
e
– orbit eccentricity
0.25953900
ω
– orbit ascending node-perihelion angle (degrees)
92.455935
Ω
– longitude of orbit ascending node (degrees)
353.821904
i
– orbit inclination to the ecliptic plane (degrees)
2.216101
Details...
Orbital evolution
Date
M
a
e
ω
Ω
i
q
P
01/13/1829
329.596599
1.15479602
0.25901111
86.153800
0.379417
2.301637
0.85569103
1.240962
01/21/1858
99.887607
1.15669841
0.25912606
87.779071
359.117747
2.366588
0.85696771
1.244030
01/29/1887
221.855956
1.15564009
0.25907504
88.205534
358.740508
2.352446
0.85624258
1.242323
02/07/1916
344.352895
1.15572336
0.25865970
89.157468
357.612309
2.356935
0.85678430
1.242457
02/14/1945
109.255245
1.15769491
0.25944445
89.817002
357.335712
2.359661
0.85733739
1.245638
02/22/1974
221.124385
1.15667558
0.25920550
90.739857
356.030415
2.256461
0.85685891
1.243993
03/02/2003
333.430364
1.15882082
0.25997755
91.739222
355.382334
2.258431
0.85755342
1.247455
03/09/2032
85.985647
1.15711462
0.25971501
92.686109
353.740096
2.213852
0.85659459
1.244701
03/17/2061
199.005792
1.15760167
0.25971829
92.926835
353.584008
2.211763
0.85695134
1.245487
03/25/2090
308.584453
1.15576777
0.25908103
94.585138
351.788636
2.302017
0.85633027
1.242529
04/03/2119
74.688073
1.15728151
0.25938099
95.109762
351.463505
2.313300
0.85710468
1.244971
04/10/2148
183.476574
1.15730076
0.25940191
95.711750
350.595214
2.264769
0.85709474
1.245002
04/18/2177
296.309829
1.15772267
0.25950345
96.596689
349.943688
2.268471
0.85728964
1.245683
Detailed table...
Graphs...
3D animation...
Calculation on the date...
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This project was supported by the Federal Agency of Education (project codes RNP 2.1.1.1689, RNP 2.1.1.745).
Samara State Technical University
Applied Mathematics and Information Science Department