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 UN
General information
Preliminary designation
2021 UN
Group
Apollo
Absolute magnitude
28.79
Approximate diameter (m)
5
Approximate mass (kg)
1.83·10
5
Number of observations
13
Arc length (days)
1
Approaches
No approaches found
Orbit initial data
Date of initial data
06/09/2026
M
– mean anomaly (degrees)
175.028797
a
– orbit major semiaxis (astronomical units)
2.16831900
e
– orbit eccentricity
0.59481000
ω
– orbit ascending node-perihelion angle (degrees)
311.520963
Ω
– longitude of orbit ascending node (degrees)
20.871171
i
– orbit inclination to the ecliptic plane (degrees)
4.795548
Details...
Orbital evolution
Date
M
a
e
ω
Ω
i
q
P
01/13/1829
125.405373
2.13396613
0.58892801
305.146495
25.318413
4.577113
0.87721369
3.117324
01/21/1858
237.443374
2.13314475
0.58884506
305.482285
24.956240
4.583230
0.87705299
3.115524
01/29/1887
350.366973
2.13563284
0.58951282
307.023244
23.940424
4.616857
0.87664991
3.120976
02/07/1916
98.085545
2.13512971
0.58947116
307.313284
23.600019
4.622534
0.87653232
3.119874
02/14/1945
207.562931
2.13683290
0.59038993
308.728434
22.583259
4.656111
0.87526827
3.123607
02/22/1974
301.679336
2.14258462
0.59090531
309.246387
22.222658
4.666124
0.87651999
3.136228
03/02/2003
34.388833
2.14100774
0.59224693
310.435536
21.339663
4.696410
0.87300248
3.132766
03/09/2032
103.934281
2.16744126
0.59535492
311.583668
20.805724
4.799676
0.87704443
3.190962
03/17/2061
137.836853
2.16701658
0.59419111
312.648406
20.063250
4.824745
0.87939460
3.190024
03/25/2090
169.014123
2.20343185
0.60099007
314.185855
19.238707
4.417999
0.87919118
3.270770
04/03/2119
122.985777
2.20042841
0.60284527
314.955705
18.604078
4.436558
0.87391056
3.264085
04/10/2148
78.596113
2.20079097
0.60225557
316.025059
17.867908
4.466424
0.87535234
3.264892
04/18/2177
33.653212
2.21003669
0.60394158
316.686019
17.311118
4.366744
0.87530363
3.285488
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