Inertia mobile component for horological resonator with magnetic interaction device insensitive to the external magnetic field

A horological resonator comprising:

• an inertia mobile component configured to oscillates about an axis of oscillation;
• and
• return means configured to maintain oscillation of the inertia mobile component,
• wherein the inertia mobile component comprises magnetic areas, and a total resultant magnetic moment of all of the magnetic areas is aligned in the direction of the axis of oscillation,
• wherein a first set of magnetic areas, from among the magnetic areas, is configured for magnetic interaction with an escape wheel set or a structural element, that is separate from the inertia mobile component, of the horological resonator,
• wherein a second set of magnetic areas, from among the magnetic areas, is configured to compensate for a resultant of magnetic moments of all of the first set of magnetic areas, such that the total resultant magnetic moment of all of the magnetic areas has a zero component in any plane perpendicular to the axis of oscillation, and
• wherein a direction of a magnetic moment of the second set of magnetic areas crosses the axis of oscillation such that magnetic balancing of the inertia mobile component is obtained.