Constraints on Dark Matter in the Solar System

Understand

We have searched for and estimated the possible gravitational influence of dark matter in the Solar system based on the EPM2011 planetary ephemerides using about 677 thousand positional observations of planets and spacecraft.

• Most of the observations belong to present-day ranging measurements.
• Our estimates of the dark matter density and mass at various distances from the Sun are generally overridden by their errors ($\sigma$).
• This suggests that the density of dark matter ${\rho}_{dm}$, if present, is very low and is much less than the currently achieved error of these parameters.