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主題: C/2021 T4 (Lemmon) 作者: peter 於 2021-10-30 10:57:29 http://astro.vanbuitenen.nl/newcomets C/2021 T4 (Lemmon) August 2023 at 1.483 au. Near perihelion this comet is expected to reach 8th magnitude. The orbit diagram shows the parameters at time of discovery. FB https://www.facebook.com/140234731687/photos/a.155712931687/10157972997006688/ |