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Asteroid General Data
General information
| Preliminary designation | 2008 GY21
| | Group | Apollo
| | Absolute magnitude | 27.60
| | Approximate diameter (m) | 8
| | Approximate mass (kg) | 9.46·105
| | Number of observations | 20
| | Arc length (days) | 1
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Approaches
Date | Object | r, AU | r, km
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| 10/15/1959 09:36:00 PM | Venus | 0.008643 | 1 292 924
| | 04/09/2008 02:24:00 PM | Moon | 0.002080 | 311 115
| | 04/09/2008 07:12:00 PM | Earth | 0.004053 | 606 331
| | 04/09/2018 09:36:00 PM | Moon | 0.002034 | 304 318
| | 04/10/2018 01:12:00 AM | Earth | 0.001660 | 248 395
| | 04/11/2110 09:36:00 PM | Moon | 0.007315 | 1 094 377
| | 04/11/2110 10:48:00 PM | Earth | 0.005118 | 765 572
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Details...
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Orbit initial data
| Date of initial data | 12/13/2017
| | M – mean anomaly (degrees) | 313.830794
| | a – orbit major semiaxis (astronomical units) | 1.07292864
| | e – orbit eccentricity | 0.37860348
| | ω – orbit ascending node-perihelion angle (degrees) | 259.923369
| | Ω – longitude of orbit ascending node (degrees) | 197.456324
| | i – orbit inclination to the ecliptic plane (degrees) | 1.874605
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Details...
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Orbital evolution
Date | M | a | e | ω | Ω | i | q | P
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| 01/05/1800 | 325.654247 | 1.06576958 | 0.37955622 | 255.863046 | 201.158703 | 1.723068 | 0.66125011 | 401.817791
| | 01/13/1829 | 99.594818 | 1.06601761 | 0.37950404 | 256.414441 | 200.597883 | 1.729391 | 0.66145962 | 401.958067
| | 01/21/1858 | 230.410891 | 1.06633353 | 0.37968257 | 256.945037 | 199.949496 | 1.732190 | 0.66146528 | 402.136765
| | 01/29/1887 | 2.269857 | 1.06558929 | 0.37966827 | 257.524864 | 199.346757 | 1.737067 | 0.66101885 | 401.715834
| | 02/07/1916 | 123.150772 | 1.06825969 | 0.38047477 | 257.210152 | 199.327628 | 1.790082 | 0.66181382 | 403.226847
| | 02/14/1945 | 233.103044 | 1.06712869 | 0.38028828 | 257.953828 | 198.439281 | 1.807100 | 0.66131216 | 402.586653
| | 02/22/1974 | 3.847814 | 1.06484220 | 0.37915373 | 257.800575 | 198.714426 | 1.869612 | 0.66110331 | 401.293440
| | 03/02/2003 | 181.992233 | 1.06262041 | 0.37793560 | 258.105598 | 198.237081 | 1.938066 | 0.66101833 | 400.038148
| | 03/09/2032 | 312.089373 | 1.06290763 | 0.37950348 | 259.115010 | 196.506239 | 1.413207 | 0.65953048 | 400.200355
| | 03/17/2061 | 123.850598 | 1.06274698 | 0.37926489 | 259.869602 | 195.831914 | 1.421046 | 0.65968436 | 400.109625
| | 03/25/2090 | 308.391999 | 1.06262159 | 0.37960754 | 261.644865 | 194.301898 | 1.458714 | 0.65924243 | 400.038818
| | 04/03/2119 | 104.639062 | 1.06653199 | 0.37835784 | 262.515235 | 194.334469 | 1.403219 | 0.66300125 | 402.249031
| | 04/10/2148 | 227.705653 | 1.06660460 | 0.37846648 | 263.128777 | 193.669353 | 1.409902 | 0.66293052 | 402.290114
| | 04/18/2177 | 10.523399 | 1.06406361 | 0.37827879 | 264.147964 | 192.609099 | 1.426652 | 0.66155091 | 400.853397
| | 04/27/2206 | 165.878452 | 1.06529969 | 0.37870205 | 264.719592 | 191.898628 | 1.432217 | 0.66186851 | 401.552079
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Detailed table...
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