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Asteroid General Data
General information
| Preliminary designation | 2021 SP
| | Group | Apollo
| | Absolute magnitude | 29.19
| | Approximate diameter (m) | 4
| | Approximate mass (kg) | 1.05·105
| | Number of observations | 10
| | Arc length (days) | 2
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Approaches
Date | Object | r, AU | r, km
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| 09/17/2021 11:45:36 AM | Earth | 0.000093 | 13 958
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Details...
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Orbit initial data
| Date of initial data | 06/09/2026
| | M – mean anomaly (degrees) | 219.915746
| | a – orbit major semiaxis (astronomical units) | 1.45582846
| | e – orbit eccentricity | 0.46336182
| | ω – orbit ascending node-perihelion angle (degrees) | 252.683808
| | Ω – longitude of orbit ascending node (degrees) | 174.526092
| | i – orbit inclination to the ecliptic plane (degrees) | 4.793342
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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 | 111.047975 | 1.15028290 | 0.42166041 | 98.427505 | 354.946949 | 0.192405 | 0.66525414 | 1.233694
| | 01/21/1858 | 298.061169 | 1.14971800 | 0.42164817 | 98.464947 | 354.869779 | 0.189948 | 0.66494151 | 1.232786
| | 01/29/1887 | 139.286179 | 1.14805548 | 0.42085021 | 98.965635 | 354.315458 | 0.185844 | 0.66489609 | 1.230113
| | 02/07/1916 | 3.128751 | 1.14662465 | 0.42018189 | 99.102288 | 354.126586 | 0.181520 | 0.66483373 | 1.227814
| | 02/14/1945 | 226.280938 | 1.14905103 | 0.42044149 | 99.181271 | 353.815104 | 0.179235 | 0.66594230 | 1.231713
| | 02/22/1974 | 67.529584 | 1.14931613 | 0.42047902 | 99.307604 | 353.609154 | 0.176892 | 0.66605281 | 1.232139
| | 03/02/2003 | 281.315213 | 1.14749295 | 0.42019490 | 99.593245 | 353.129874 | 0.173441 | 0.66532226 | 1.229209
| | 03/09/2032 | 318.052453 | 1.45601942 | 0.46346043 | 252.768783 | 174.449993 | 4.792302 | 0.78121204 | 1.756917
| | 03/17/2061 | 147.396640 | 1.45586271 | 0.46338686 | 253.150137 | 174.101291 | 4.803293 | 0.78123506 | 1.756634
| | 03/25/2090 | 334.392236 | 1.45455305 | 0.46343699 | 253.580452 | 173.844827 | 4.804591 | 0.78045936 | 1.754264
| | 04/03/2119 | 161.368713 | 1.45667530 | 0.46378985 | 253.936844 | 173.464351 | 4.799516 | 0.78108408 | 1.758105
| | 04/10/2148 | 336.736650 | 1.45975147 | 0.46456358 | 254.239053 | 173.151596 | 4.800943 | 0.78160410 | 1.763677
| | 04/18/2177 | 143.207759 | 1.45902236 | 0.46413657 | 254.719027 | 172.769782 | 4.808584 | 0.78183673 | 1.762356
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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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