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Table 1
Distribution of the astrometric observations from MPC.
| Perihelion time | Observation interval | Number of obs. |
|
|
||
| 1994 Nov. 1 | 1994 Jun. 12–1997 Jun. 24 | 557 |
| 2001 Sep. 14 | 1999 Jun. 13–2003 Apr. 28 | 853 |
| 2008 Jul. 22 | 2007 Aug. 19–2009 Jun. 16 | 796 |
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