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References
- ↑ "87P/Bus Orbit". Minor Planet Center . Retrieved 2014-06-16.
- ↑ Syuichi Nakano (2010-04-29). "87P/Bus (NK 1931)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-18.
- ↑ 87P past, present and future orbital elements
- ↑ "Horizons Batch for 87P/Bus (90000883) on 2029-Jun-07" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons . Retrieved 2022-06-27. (JPL#K203/18 Soln.date: 2020-Sep-28)
- ↑ "87/P Bus". Seiichi Yoshida. Retrieved 15 May 2015.
