Navigating with star tracking sensors

A method of navigating a body, the method comprising:

• determining a measured direction of each of a plurality of celestial objects with respect to the body based on an output of one or more star tracking sensors mounted to the body, wherein at least one of the celestial objects is a moving celestial object having a known path;
• calculating an expected direction of at least one of the plurality of celestial objects with respect to the body based on a navigation solution for the body;
• and
• calculating an updated navigation solution for the body based on the path of the at least one celestial objects that is a moving celestial object, and differences between the expected directions and measured directions of the plurality of celestial objects.

A non-transitory processor-readable medium having processor-executable instructions stored thereon, configured to:

• determine a measured direction of each of a plurality of celestial objects with respect to the body based on an output of one or more star tracking sensors mounted to the body, wherein at least one of the celestial objects is a moving celestial object having a known path;
• calculate an expected direction of at least one of the plurality of celestial objects with respect to the body based on a navigation solution for the body;
• and
• calculate an updated navigation solution for the body based on the path of the at least one celestial objects that is a moving celestial object, and differences between the expected directions and measured directions of the plurality of celestial objects.