There are 10 stellated regular 4-polytopes (Wells 1991, p. 209).
Polytope Stellations
See also
Polytope, StellationExplore with Wolfram|Alpha
References
Wells, D. The Penguin Dictionary of Curious and Interesting Geometry. London: Penguin, 1991.Referenced on Wolfram|Alpha
Polytope StellationsCite this as:
Weisstein, Eric W. "Polytope Stellations." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PolytopeStellations.html