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Discovery
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| Discovered by | Vaisala, Y. |
| Discovery site | Turku |
| Discovery date | February 24, 1938 |
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Designations
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| MPC designation | 1551 |
| Named after | Friedrich Wilhelm Argelander |
| Alternate name(s) | 1938 DC1 |
| Epoch May 14, 2008 | |
| Ap | 2.5539965 |
| Peri | 2.2351733 |
| Eccentricity | 0.0665717 |
| Orbital period | 1353.4548966 |
| Mean anomaly | 163.48471 |
| Inclination | 3.76387 |
| Longitude of ascending node | 107.32893 |
| Argument of peri | 233.56876 |
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Physical characteristics
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| Absolute magnitude (H) | 12.2 |
1551 Argelander (provisional designation: 1938 DC1) is a main belt asteroid discovered on February 24, 1938 by Yrjö Väisälä at the Iso-Heikkilä Observatory in Turku, Finland. It is named after Friedrich Wilhelm Argelander, a 19th century head of the observatory at Turku.
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