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主題: 業餘天文學家 用視差量asteroid 163899 (2003 SD220)距離 作者: peter 於 2022-03-08 12:34:50 https://skyandtelescope.org/observing/amateur-team-measures-distance-near-earth-asteroid/
On the afternoon of December 19, 2021, our team of amateur astronomers in two towns in Italy, Cremona and Salerno, observed the close passage of the near-Earth asteroid 163899 (2003 SD220). Our observations enabled us to calculate its distance using the parallax method. |