Midheaven, aka the Medium Coeli (MC) means “top of the sky”. It is not a planet or an asteroid, it is an angle in your chart just like your Rising Sign. Your Rising Sign is the door to your first house which rules self, and creates the façade that you project to others, likewise your Midheaven is the door to your tenth house of career, and gives you insight on your strengths of what you personally bring to the table in your job. In some ways, it tells you more about your career path than your zodiac sign