Hartmann reported that absorption from the "K" line of calcium appeared "extraordinarily weak, but almost perfectly sharp" and also reported the "quite surprising result that the calcium line at 393.4 nanometres does not share in the periodic displacements of the lines caused by the orbital motion of the spectroscopic binary star".
Hartmann informou de que a absorción da liña "K" do calcio parecía "extraordinariamente débil, pero case perfectamente nítida" e tamén informou do "resultado bastante sorprendente de que a liña do calcio a 393,4 nanómetros non se comparte nos desprazamentos períodicos das liñas causadas polo movemento orbital da estrela binaria espectroscópica".