The modular curve $X_{24d}$

Curve name	$X_{24d}$
Index	$24$
Level	$4$
Genus	$0$
Does the subgroup contain $-I$?	No
Generating matrices	$\left[ \begin{matrix} 1 & 0 \\ 0 & 3 \end{matrix}\right], \left[ \begin{matrix} 1 & 2 \\ 2 & 3 \end{matrix}\right]$
Images in lower levels	Level Index of image Corresponding curve $2$ $6$ $X_{8}$
Meaning/Special name
Chosen covering	$X_{24}$
Curves that $X_{24d}$ minimally covers
Curves that minimally cover $X_{24d}$
Curves that minimally cover $X_{24d}$ and have infinitely many rational points.
Model	$\mathbb{P}^{1}$, a universal elliptic curve over an appropriate base is given by $$y^2 = x^3 + A(t)x + B(t), \text{ where}$$ $$A(t) = -27t^{8} - 81t^{6} - 108t^{4} - 81t^{2} - 27$$ $$B(t) = 54t^{12} + 243t^{10} + 324t^{8} - 324t^{4} - 243t^{2} - 54$$
Info about rational points
Comments on finding rational points	None
Elliptic curve whose $2$-adic image is the subgroup	$y^2 = x^3 - 126175x + 17189250$, with conductor $2200$
Generic density of odd order reductions	$13/84$

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