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Asteroid General Data
General information
| Preliminary designation | 2015 TN21
| | Group | Apollo
| | Absolute magnitude | 27.10
| | Approximate diameter (m) | 10
| | Approximate mass (kg) | 1.89·106
| | Number of observations | 50
| | Arc length (days) | 2
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Approaches
Date | Object | r, AU | r, km
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| 10/08/1886 02:38:24 PM | Earth | 0.000841 | 125 824
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Details...
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Orbit initial data
| Date of initial data | 06/09/2026
| | M – mean anomaly (degrees) | 264.695824
| | a – orbit major semiaxis (astronomical units) | 1.34556199
| | e – orbit eccentricity | 0.46231488
| | ω – orbit ascending node-perihelion angle (degrees) | 86.502694
| | Ω – longitude of orbit ascending node (degrees) | 13.536654
| | i – orbit inclination to the ecliptic plane (degrees) | 2.225689
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Details...
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Orbital evolution
Date | M | a | e | ω | Ω | i | q | P
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| 01/13/1829 | 109.545700 | 1.30844302 | 0.45381534 | 85.081161 | 17.023791 | 2.914862 | 0.71465151 | 1.496693
| | 01/21/1858 | 252.503818 | 1.30752254 | 0.45426752 | 85.393730 | 16.499128 | 2.935204 | 0.71355751 | 1.495114
| | 01/29/1887 | 36.770157 | 1.35136994 | 0.46228261 | 82.939779 | 15.859845 | 2.303398 | 0.72665512 | 1.570949
| | 02/07/1916 | 214.187123 | 1.35087775 | 0.46248735 | 83.353904 | 15.544390 | 2.300972 | 0.72611389 | 1.570090
| | 02/14/1945 | 33.496138 | 1.35210094 | 0.46280257 | 84.188573 | 14.917657 | 2.289297 | 0.72634515 | 1.572223
| | 02/22/1974 | 183.976147 | 1.35432255 | 0.46374128 | 84.800645 | 14.492249 | 2.283876 | 0.72626728 | 1.576100
| | 03/02/2003 | 328.034657 | 1.35546671 | 0.46434776 | 85.370182 | 14.085844 | 2.283487 | 0.72605878 | 1.578098
| | 03/09/2032 | 151.125839 | 1.34528327 | 0.46231485 | 86.547093 | 13.494849 | 2.223941 | 0.72333883 | 1.560347
| | 03/17/2061 | 355.556066 | 1.34640810 | 0.46276229 | 87.043686 | 13.223647 | 2.217586 | 0.72334121 | 1.562305
| | 03/25/2090 | 213.494261 | 1.34361404 | 0.46212041 | 87.392073 | 12.854722 | 2.218896 | 0.72270257 | 1.557444
| | 04/03/2119 | 81.903810 | 1.34332047 | 0.46162430 | 87.995853 | 12.443216 | 2.212839 | 0.72321111 | 1.556933
| | 04/10/2148 | 287.450373 | 1.34965425 | 0.46346794 | 88.821815 | 11.735576 | 2.197085 | 0.72413278 | 1.567958
| | 04/18/2177 | 110.810533 | 1.34852365 | 0.46275372 | 89.804681 | 10.907220 | 2.183583 | 0.72448932 | 1.565988
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Detailed table...
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Graphs...
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3D animation...
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Calculation on the date...
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