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
1998 EP
8
(16912 Rhiannon)
General information
Preliminary designation
1998 EP
8
Name
Rhiannon
Number
16912
Group
Amor
Absolute magnitude
17.90
Approximate diameter (m)
700
Approximate mass (kg)
6.25·10
11
Number of observations
327
Arc length (days)
12278
Approaches
No approaches found
Orbit initial data
Date of initial data
06/09/2026
M
– mean anomaly (degrees)
179.871491
a
– orbit major semiaxis (astronomical units)
1.75113300
e
– orbit eccentricity
0.27269100
ω
– orbit ascending node-perihelion angle (degrees)
221.235739
Ω
– longitude of orbit ascending node (degrees)
169.160588
i
– orbit inclination to the ecliptic plane (degrees)
24.522058
Details...
Orbital evolution
Date
M
a
e
ω
Ω
i
q
P
01/13/1829
121.527824
1.75122854
0.27072041
219.466729
170.267081
24.575877
1.27713523
2.317474
01/21/1858
308.569705
1.75128191
0.27091012
219.759552
170.098654
24.567667
1.27684191
2.317580
01/29/1887
135.979438
1.75156849
0.27119948
219.953590
169.948812
24.563252
1.27654402
2.318149
02/07/1916
323.141722
1.75124002
0.27159663
220.256599
169.773980
24.553072
1.27560913
2.317497
02/14/1945
150.549876
1.75165866
0.27184295
220.521415
169.618795
24.545970
1.27548260
2.318328
02/22/1974
338.041286
1.75136277
0.27207436
220.742278
169.447330
24.536372
1.27486186
2.317740
03/02/2003
165.241142
1.75125007
0.27250633
221.033020
169.288917
24.529904
1.27402334
2.317517
03/09/2032
352.853862
1.75129929
0.27261029
221.326292
169.118444
24.516438
1.27387707
2.317614
03/17/2061
180.189080
1.75124991
0.27308908
221.557074
168.968013
24.509476
1.27300269
2.317516
03/25/2090
7.491522
1.75148418
0.27357133
221.869244
168.799960
24.497986
1.27232832
2.317981
04/03/2119
194.850413
1.75145642
0.27369516
222.083575
168.643573
24.490614
1.27209127
2.317926
04/10/2148
22.162145
1.75133215
0.27440711
222.327896
168.487829
24.486776
1.27075416
2.317680
04/18/2177
209.610376
1.75148763
0.27442293
222.582357
168.313950
24.477260
1.27083926
2.317988
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