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Discovery and designation
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| Discovered by | Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels |
| Discovery site | Palomar Observatory |
| Discovery date | March 24, 1971 |
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Designations
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| MPC designation | 1872 |
| Named after | Helenus |
| Alternate name(s) | 1971 FG |
| Epoch May 14, 2008 | |
| Ap | 5.5467681 |
| Peri | 5.0493615 |
| Eccentricity | 0.0469423 |
| Orbital period | 4454.2470875 |
| Mean anomaly | 299.38148 |
| Inclination | 14.65158 |
| Longitude of ascending node | 188.85186 |
| Argument of peri | 113.36046 |
| Absolute magnitude (H) | 11.2 |
1872 Helenos (1971 FG) is a Jupiter Trojan discovered on March 24, 1971 by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory.
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