外部連結
- [https://web.archive.org/web/20080705060830/http://www.astro.uiuc.edu/~kaler/sow/chi1ori.html Chi-1 Orionis] by Professor Jim Kaler.
- [http://www.solstation.com/stars/chi1ori2.htm Chi1 Orionis 2] at SolStation.
- [http://www.alcyone.de/SIT/bsc/HR2047.html Alcyone] emphemeris.
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