\newcommand{\etalchar}[1]{$^{#1}$} \begin{thebibliography}{CCN{\etalchar{+}}85} \bibitem[CCN{\etalchar{+}}85]{CCN85} J[ohn]~H. Conway, R[obert]~T. Curtis, S[imon]~P. Norton, R[ichard]~A. Parker, and R[obert]~A. Wilson. \newblock {\em Atlas of finite groups}. \newblock 1985. \bibitem[HNN06]{Fi23mod2} Gerhard Hiss, Max Neunh{\"o}ffer, and Felix Noeske. \newblock The 2-modular characters of the {F}ischer group {$\rm Fi\sb {23}$}. \newblock {\em J. Algebra}, 300(2):555--570, 2006. \bibitem[Jan05]{Jansen} C.~Jansen. \newblock The minimal degrees of faithful representations of the sporadic simple groups and their covering groups. \newblock {\em LMS J. Comput. Math.}, (8):122--144, 2005. \bibitem[Mal06]{LongOrbits} Gunter Malle. \newblock Fast-einfache {G}ruppen mit langen {B}ahnen in absolut irreduzibler {O}peration. \newblock {\em J. Algebra}, 300(2):655--672, 2006. \bibitem[MNW07]{MNW} J.~M{\"u}ller, M.~Neunh{\"o}ffer, and R.~A. Wilson. \newblock Enumerating big orbits and an application: ${B}$ acting on the cosets of ${F}i_{23}$. \newblock {\em J. Algebra}, (1):75--96, 2007. \bibitem[M{\"u}l08]{MueBMCo2} J.~M{\"u}ller. \newblock On the action of the sporadic simple baby monster group on its conjugacy class ${2B}$. \newblock {\em LMS J. Comput. Math.}, (11):15--27, 2008. \bibitem[Wil]{AGR} Robert~A. Wilson. \newblock {ATLAS of Finite Group Representations}. \newblock \href{http://brauer.maths.qmul.ac.uk/Atlas}{http://brauer.maths.qmul.ac.uk/A% tlas}. \bibitem[Wil96]{Wil96} R[obert]~A. Wilson. \newblock Standard generators for sporadic simple groups. \newblock 184:505--515, 1996. \end{thebibliography}