The orbital pericenter precession in the 2PN approximation
Department of Physics and Astronomy, University of Missouri, 322 Physics Bldg., 65211, Columbia, MO, USA
Accepted: 13 May 2020
Published online: 3 June 2020
Recent article Revisiting the 2PN Pericenter Precession in View of Possible Future Measurements published by Iorio (Universe 6(4):53, 2020. https://doi.org/10.3390/universe6040053) argues that calculations of the secular 2PN precession of the orbital pericenter of a binary system accomplished by Damour and Schäfer (Nuovo Cim B Ser 101B(2):127–176, 1988. https://doi.org/10.1007/BF02828697) and Kopeikin and Potapov (Astron Rep 38(1):104–114, 1994) with different mathematical techniques are inconsistent, differ from each other and do not agree with the result obtained by L. Iorio. The purpose of this communication is to demonstrate that the article by Iorio (2020) is erroneous, suffers from misconceptions and cannot be trusted.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020