# A comment on "Can observations inside the Solar System reveal the gravitational properties of the quantum vacuum?" by D.S. Hajdukovic

## TL;DR

This paper critically examines Hajdukovic's modified gravity theory based on quantum vacuum dipoles, showing that its predicted planetary precessions are inconsistent with current observational bounds from ephemerides.

## Contribution

It provides an empirical test that rules out Hajdukovic's theory predictions using existing Solar System orbital data.

## Key findings

- Predicted planetary precessions are much larger than observational bounds.
- Current ephemerides data do not support the existence of such anomalous precessions.
- Hajdukovic's theory is incompatible with Solar System orbital observations.

## Abstract

The modified gravitational theory by Hajdukovic [arXiv:1210.7421], based on the idea that quantum vacuum contains virtual gravitational dipoles, predicts, among other things, anomalous secular precessions of the planets of the Solar System as large as $\simeq 700-6,000$ milliarceconds per century. We demonstrate that they are ruled out by several orders of magnitude by the existing bounds on any anomalous orbital secular rates obtained with the EPM and INPOP ephemerides.