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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 | 8107
| | Arc length (days) | 6276
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Approaches
Date | Object | r, AU | r, km
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| 04/13/2029 09:50:24 PM | Earth | 0.000254 | 38 007
| | 04/14/2029 02:32:38 PM | Moon | 0.000642 | 96 110
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Details...
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Orbit initial data
| Date of initial data | 02/25/2023
| | M – mean anomaly (degrees) | 280.458692
| | a – orbit major semiaxis (astronomical units) | 0.92271627
| | e – orbit eccentricity | 0.19141660
| | ω – orbit ascending node-perihelion angle (degrees) | 126.605863
| | Ω – longitude of orbit ascending node (degrees) | 203.957521
| | i – orbit inclination to the ecliptic plane (degrees) | 3.339268
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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 | 219.796185 | 0.91956117 | 0.19328381 | 121.778963 | 210.475311 | 3.201295 | 0.74182489 | 0.881803
| | 01/21/1858 | 160.093826 | 0.92184272 | 0.19262148 | 122.103288 | 209.620254 | 3.221634 | 0.74427600 | 0.885087
| | 01/29/1887 | 10.939041 | 0.92597169 | 0.19038459 | 121.594683 | 208.439554 | 3.299070 | 0.74968095 | 0.891040
| | 02/07/1916 | 205.487809 | 0.92773929 | 0.18973319 | 122.104918 | 207.346894 | 3.304069 | 0.75171636 | 0.893593
| | 02/14/1945 | 18.531294 | 0.92728681 | 0.18957323 | 123.084715 | 206.319962 | 3.307635 | 0.75149805 | 0.892939
| | 02/22/1974 | 217.492380 | 0.92578462 | 0.19016802 | 124.076771 | 205.359842 | 3.323081 | 0.74972999 | 0.890770
| | 03/02/2003 | 78.030564 | 0.92198018 | 0.19119255 | 126.152686 | 204.585346 | 3.333244 | 0.74570444 | 0.885285
| | 03/09/2032 | 130.088764 | 1.10319008 | 0.18910644 | 71.378090 | 203.546629 | 2.220044 | 0.89456973 | 1.158714
| | 03/17/2061 | 148.277809 | 1.10324050 | 0.18917101 | 71.419327 | 203.006853 | 2.230640 | 0.89453938 | 1.158793
| | 03/25/2090 | 145.662316 | 1.10474710 | 0.18937506 | 72.724172 | 201.809418 | 2.276028 | 0.89553556 | 1.161168
| | 04/03/2119 | 137.102035 | 1.10544917 | 0.18950560 | 73.173390 | 201.263265 | 2.288693 | 0.89596037 | 1.162275
| | 04/10/2148 | 126.287951 | 1.10525147 | 0.18949337 | 73.668697 | 200.898551 | 2.287119 | 0.89581364 | 1.161963
| | 04/18/2177 | 131.633850 | 1.10295204 | 0.18884133 | 74.220795 | 200.427510 | 2.295115 | 0.89466911 | 1.158339
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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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