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Asteroid General Data
General information
| Preliminary designation | 2018 SM
| | Group | Apollo
| | Absolute magnitude | 29.41
| | Approximate diameter (m) | 4
| | Approximate mass (kg) | 7.76·104
| | Number of observations | 18
| | Arc length (days) | 2
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Approaches
Date | Object | r, AU | r, km
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| 09/15/2018 10:33:36 PM | Earth | 0.000286 | 42 795
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Details...
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Orbit initial data
| Date of initial data | 06/09/2026
| | M – mean anomaly (degrees) | 97.621039
| | a – orbit major semiaxis (astronomical units) | 1.78566634
| | e – orbit eccentricity | 0.46767198
| | ω – orbit ascending node-perihelion angle (degrees) | 145.943636
| | Ω – longitude of orbit ascending node (degrees) | 172.798346
| | i – orbit inclination to the ecliptic plane (degrees) | 8.970924
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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 | 248.779765 | 2.03016146 | 0.52612029 | 144.415547 | 176.051215 | 6.323835 | 0.96205233 | 2.892654
| | 01/21/1858 | 260.643765 | 2.02930646 | 0.52652253 | 145.268020 | 175.501768 | 6.381975 | 0.96083088 | 2.890827
| | 01/29/1887 | 261.187329 | 2.03532967 | 0.53080571 | 146.100089 | 174.939967 | 6.434439 | 0.95496506 | 2.903707
| | 02/07/1916 | 260.375847 | 2.03511253 | 0.53031438 | 146.435123 | 174.610031 | 6.454932 | 0.95586309 | 2.903242
| | 02/14/1945 | 258.349434 | 2.03708533 | 0.52728511 | 146.976979 | 174.216313 | 6.492656 | 0.96296056 | 2.907465
| | 02/22/1974 | 251.263669 | 2.03735489 | 0.52694730 | 147.810822 | 173.769977 | 6.541785 | 0.96377623 | 2.908042
| | 03/02/2003 | 242.861413 | 2.03682090 | 0.52971081 | 148.851572 | 173.122416 | 6.609964 | 0.95789486 | 2.906899
| | 03/09/2032 | 245.012374 | 1.78495975 | 0.46761499 | 146.108065 | 172.710298 | 8.982425 | 0.95028581 | 2.384752
| | 03/17/2061 | 302.380967 | 1.78669751 | 0.46782801 | 146.524306 | 172.464145 | 9.004023 | 0.95083037 | 2.388236
| | 03/25/2090 | 357.005846 | 1.78667113 | 0.46692972 | 147.017576 | 172.173010 | 9.035542 | 0.95242129 | 2.388183
| | 04/03/2119 | 22.858395 | 1.79580807 | 0.46866476 | 147.615200 | 171.924796 | 9.023488 | 0.95417611 | 2.406526
| | 04/10/2148 | 44.490643 | 1.79526465 | 0.46834133 | 147.998207 | 171.647579 | 9.048377 | 0.95446802 | 2.405433
| | 04/18/2177 | 69.772776 | 1.79382865 | 0.46855204 | 148.341845 | 171.344656 | 9.078765 | 0.95332657 | 2.402548
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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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Return to approaches archive
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