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Asteroid General Data
General information
| Preliminary designation | 2013 XS21
| | Group | Apollo
| | Absolute magnitude | 29.38
| | Approximate diameter (m) | 4
| | Approximate mass (kg) | 8.09·104
| | Number of observations | 24
| | Arc length (days) | 2
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Approaches
Date | Object | r, AU | r, km
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| 12/11/2013 11:31:12 PM | Earth | 0.000485 | 72 564
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Details...
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Orbit initial data
| Date of initial data | 06/09/2026
| | M – mean anomaly (degrees) | 262.532901
| | a – orbit major semiaxis (astronomical units) | 1.91430452
| | e – orbit eccentricity | 0.49427611
| | ω – orbit ascending node-perihelion angle (degrees) | 341.197649
| | Ω – longitude of orbit ascending node (degrees) | 80.371215
| | i – orbit inclination to the ecliptic plane (degrees) | 3.079914
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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 | 92.815711 | 1.94427552 | 0.50398503 | 335.290838 | 83.975661 | 1.005920 | 0.96438975 | 2.711049
| | 01/21/1858 | 331.365342 | 1.95245687 | 0.50558256 | 335.537441 | 84.136761 | 1.001615 | 0.96532872 | 2.728179
| | 01/29/1887 | 197.772777 | 1.95256333 | 0.50586365 | 335.648071 | 84.255468 | 0.997100 | 0.96483251 | 2.728402
| | 02/07/1916 | 67.099379 | 1.94800564 | 0.50416504 | 338.580751 | 81.610087 | 1.036840 | 0.96588931 | 2.718854
| | 02/14/1945 | 298.693953 | 1.95530034 | 0.50508168 | 338.929712 | 81.629419 | 1.029297 | 0.96771396 | 2.734140
| | 02/22/1974 | 160.536669 | 1.95622734 | 0.50545790 | 338.978354 | 81.842075 | 1.023716 | 0.96743677 | 2.736085
| | 03/02/2003 | 24.285973 | 1.95364778 | 0.50492007 | 339.259630 | 81.727639 | 1.022488 | 0.96721181 | 2.730675
| | 03/09/2032 | 323.850259 | 1.91415585 | 0.49372556 | 341.328979 | 80.344223 | 3.078828 | 0.96908818 | 2.648296
| | 03/17/2061 | 308.845470 | 1.91525147 | 0.49419023 | 341.638263 | 80.186407 | 3.077266 | 0.96875291 | 2.650570
| | 03/25/2090 | 295.544714 | 1.91240943 | 0.49427068 | 342.351390 | 79.674562 | 3.099979 | 0.96716152 | 2.644673
| | 04/03/2119 | 283.779583 | 1.91151526 | 0.49387481 | 342.815354 | 79.373204 | 3.101964 | 0.96746602 | 2.642818
| | 04/10/2148 | 275.695551 | 1.91173468 | 0.49422011 | 343.065196 | 79.252722 | 3.101099 | 0.96691696 | 2.643273
| | 04/18/2177 | 271.788843 | 1.91010618 | 0.49287236 | 343.733731 | 78.752320 | 3.123035 | 0.96866765 | 2.639896
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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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