Lockwood (1957) terms the ellipse negative pedal curve with pedal point at the focus "Burleigh's oval" in honor of his student M. J. Burleigh, who first drew his attention to the curve.
Burleigh's Oval
See also
Ellipse Negative Pedal Curve, Oval, OvoidExplore with Wolfram|Alpha
References
Hilton, H. Plane Algebraic Curves. Oxford, England: Oxford University Press, p. 64, 1932.Lockwood, E. H. "Negative Pedal Curve of the Ellipse with Respect to a Focus." Math. Gaz. 41, 254-257, 1957.Salmon, G. A Treatise on Higher Plane Curves, Intended As a Sequel to a Treatise on Conic Sections, 3rd ed. Dublin: Hodges, p. 107, 1879.Referenced on Wolfram|Alpha
Burleigh's OvalCite this as:
Weisstein, Eric W. "Burleigh's Oval." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/BurleighsOval.html