https://www.wolframalpha.com/input?i=circular+orbit+speed
circular orbit speed - Wolfram|Alpha
circular orbitspeedwolframalpha
https://arxiv.org/abs/1410.6265
[1410.6265] Marginally stable circular orbit of a test body in spherically symmetric and static...
Abstract page for arXiv paper 1410.6265: Marginally stable circular orbit of a test body in spherically symmetric and static spacetimes
https://arxiv.org/abs/2505.02107
[2505.02107] Upper bound on the radius of the innermost stable circular orbit of black holes
Abstract page for arXiv paper 2505.02107: Upper bound on the radius of the innermost stable circular orbit of black holes