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Asteroid General Data
General information
| Preliminary designation | 2004 MN4
| | Name | Apophis
| | Number | 99942
| | Group | Aten
| | Absolute magnitude | 19.00
| | Approximate diameter (m) | 420
| | Approximate mass (kg) | 1.37·1011
| | Number of observations | 9425
| | Arc length (days) | 6599
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Approaches
Date | Object | r, AU | r, km
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| 04/13/2029 09:50:24 PM | Earth | 0.000255 | 38 096
| | 04/14/2029 02:32:38 PM | Moon | 0.000641 | 95 868
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Details...
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Orbit initial data
| Date of initial data | 10/17/2024
| | M – mean anomaly (degrees) | 227.763870
| | a – orbit major semiaxis (astronomical units) | 0.92238198
| | e – orbit eccentricity | 0.19114961
| | ω – orbit ascending node-perihelion angle (degrees) | 126.672462
| | Ω – longitude of orbit ascending node (degrees) | 203.904167
| | i – orbit inclination to the ecliptic plane (degrees) | 3.340990
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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 | 254.542466 | 0.92311266 | 0.19162178 | 120.604105 | 210.776645 | 3.258037 | 0.74622417 | 0.886916
| | 01/21/1858 | 156.897213 | 0.92322648 | 0.19146224 | 121.575646 | 209.588962 | 3.252885 | 0.74646347 | 0.887080
| | 01/29/1887 | 11.292975 | 0.92604355 | 0.19033699 | 121.600556 | 208.448628 | 3.300055 | 0.74978321 | 0.891144
| | 02/07/1916 | 205.444654 | 0.92773636 | 0.18972864 | 122.103553 | 207.347701 | 3.304083 | 0.75171820 | 0.893588
| | 02/14/1945 | 18.526240 | 0.92728450 | 0.18957419 | 123.085394 | 206.319893 | 3.307639 | 0.75149529 | 0.892936
| | 02/22/1974 | 217.494032 | 0.92578468 | 0.19016792 | 124.076618 | 205.359917 | 3.323084 | 0.74973013 | 0.890770
| | 03/02/2003 | 78.030627 | 0.92198017 | 0.19119264 | 126.152730 | 204.585320 | 3.333246 | 0.74570435 | 0.885285
| | 03/09/2032 | 130.487648 | 1.10279075 | 0.18898684 | 71.473159 | 203.546782 | 2.223352 | 0.89437781 | 1.158085
| | 03/17/2061 | 141.236718 | 1.10530175 | 0.18975749 | 70.937858 | 203.112057 | 2.222628 | 0.89556247 | 1.162042
| | 03/25/2090 | 130.165342 | 1.10517736 | 0.18966808 | 71.322265 | 202.435030 | 2.241816 | 0.89556050 | 1.161846
| | 04/03/2119 | 118.841692 | 1.10553192 | 0.18975481 | 71.593565 | 202.117212 | 2.243227 | 0.89575192 | 1.162405
| | 04/10/2148 | 137.093439 | 1.10042257 | 0.18819340 | 73.950439 | 200.236462 | 2.333880 | 0.89333031 | 1.154356
| | 04/18/2177 | 350.744579 | 1.08539161 | 0.18432694 | 79.215238 | 198.717649 | 2.346311 | 0.88532470 | 1.130786
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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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