5621 Erb
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| Discovery and designation | |
|---|---|
| Discovered by | Lawrence, K. |
| Discovery site | Palomar |
| Discovery date | September 23, 1990 |
| Designations | |
| MPC designation | 5621 |
| Alternative names | 1990 SG4 |
| Orbital characteristics | |
| Epoch May 14, 2008 | |
| Aphelion | 3.1883760 |
| Perihelion | 1.4194900 |
| Eccentricity | 0.3838840 |
| Orbital period | 1277.3302549 |
| Mean anomaly | 52.83453 |
| Inclination | 5.53021 |
| Longitude of ascending node | 279.10013 |
| Argument of perihelion | 4.95600 |
| Physical characteristics | |
| Absolute magnitude (H) | 13.9 |
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5621 Erb (1990 SG4) is a Mars-crossing asteroid discovered on September 23, 1990, by Kenneth J. Lawrence at Palomar Observatory.
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