Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID53493339.
minorplanet.info
Skiff (2011) web: rotation period 8.994±0.005 hours with a brightness amplitude of 0.18±0.02 mag. Quality code of 3. Observations from 10 October 2010. Summary figures for (2744) Birgitta at the LCDB