NGC 2264 numbering system (05.11.98)

    1 -  239 :  239 stars, Walker
  301 -  544 :  243 stars, Vasilevskis (no + 300)
 1001 - 1609 :  609 stars, Sung et al. (no + 1000)
 2301 - 2868 :  333 stars, Adams et al. (no + 2000)