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Asteroid General Data
General information
| Preliminary designation | 2021 HC1
| | Group | Apollo
| | Absolute magnitude | 28.06
| | Approximate diameter (m) | 7
| | Approximate mass (kg) | 5.01·105
| | Number of observations | 12
| | Arc length (days) | 2
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Approaches
Date | Object | r, AU | r, km
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| 04/14/2021 06:44:38 PM | Moon | 0.000744 | 111 262
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Details...
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Orbit initial data
| Date of initial data | 03/31/2024
| | M – mean anomaly (degrees) | 185.687355
| | a – orbit major semiaxis (astronomical units) | 1.15610945
| | e – orbit eccentricity | 0.31291282
| | ω – orbit ascending node-perihelion angle (degrees) | 97.341350
| | Ω – longitude of orbit ascending node (degrees) | 24.930594
| | i – orbit inclination to the ecliptic plane (degrees) | 5.541281
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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 | 109.952994 | 1.09552713 | 0.30374293 | 86.623752 | 27.034938 | 5.640105 | 0.76276851 | 1.146662
| | 01/21/1858 | 213.650163 | 1.09586332 | 0.30385961 | 86.780751 | 26.768555 | 5.638015 | 0.76287472 | 1.147190
| | 01/29/1887 | 320.913942 | 1.09678421 | 0.30321020 | 87.645827 | 26.413031 | 5.724659 | 0.76422805 | 1.148636
| | 02/07/1916 | 59.662151 | 1.09695443 | 0.30338255 | 87.718890 | 26.176719 | 5.724243 | 0.76415760 | 1.148903
| | 02/14/1945 | 160.539147 | 1.09674699 | 0.30342000 | 87.632250 | 25.918671 | 5.725203 | 0.76397202 | 1.148577
| | 02/22/1974 | 169.617184 | 1.11939132 | 0.30597567 | 92.124913 | 25.533602 | 5.715249 | 0.77688481 | 1.184332
| | 03/02/2003 | 331.737449 | 1.12291978 | 0.30691331 | 92.431416 | 25.174485 | 5.670723 | 0.77828076 | 1.189936
| | 03/09/2032 | 325.294751 | 1.15604242 | 0.31304295 | 97.323943 | 24.844700 | 5.542232 | 0.79415149 | 1.242972
| | 03/17/2061 | 88.733499 | 1.15641719 | 0.31321337 | 97.734539 | 24.491154 | 5.509911 | 0.79421186 | 1.243576
| | 03/25/2090 | 144.374404 | 1.16392595 | 0.31464602 | 99.001053 | 24.282522 | 5.476910 | 0.79770129 | 1.255708
| | 04/03/2119 | 188.601239 | 1.16337369 | 0.31463637 | 99.227690 | 24.003719 | 5.460109 | 0.79733401 | 1.254814
| | 04/10/2148 | 286.642030 | 1.15715857 | 0.31360015 | 98.448729 | 23.720001 | 5.444716 | 0.79427347 | 1.244772
| | 04/18/2177 | 41.237939 | 1.15712998 | 0.31363526 | 98.968837 | 23.368016 | 5.425077 | 0.79421322 | 1.244726
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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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