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Discovery
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| Discovered by | Eleanor F. Helin |
| Discovery site | Palomar |
| Discovery date | June 4, 1986 |
| Epoch April 10, 2007 (JD 2454200.5) TDB | |
| Aphelion | 2.033880282940836 AU |
| Perihelion | 1.05547152552299 AU |
| Semi-major axis | 1.54467590423191 AU |
| Eccentricity | 0.316703573460726 |
| Orbital period | 701.2203073441713 d (1.92 a) |
| Mean anomaly | 270.4100611359361° |
| Inclination | 10.7682048761404° |
| Longitude of ascending node | 229.9345257465426° |
| Argument of perihelion | 86.72664557013501° |
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Physical characteristics
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| Dimensions | 0.7 km |
| Absolute magnitude (H) | 18.2 |
(3988) 1986 LA is an Amor asteroid that is 0.7 kilometers in diameter. It completes one revolution around the Sun about once every 2 years. It was discovered by Eleanor F. Helin at the Palomar Observatory in San Diego County, California.[1]
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