It's tricky to give a definitive number because it depends on how you define "heavenly body" and what counts. Here's a breakdown:

Major Objects:

* Sun: 1

* Planets: 8 (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune)

* Dwarf Planets: At least 5 officially recognized (Pluto, Eris, Makemake, Haumea, Ceres), with many more candidates.

Smaller Objects:

* Moons: Over 200 known moons orbiting the planets.

* Asteroids: Millions, concentrated in the asteroid belt between Mars and Jupiter.

* Comets: Billions, icy bodies that orbit the Sun in highly elliptical paths.

* Other Debris: The solar system is full of dust, gas, and smaller particles.

So, the answer depends on what you consider:

* Just major bodies: 14 (1 Sun + 8 Planets + 5 Dwarf Planets)

* Including moons: Over 200

* Including asteroids and comets: Millions, or even billions

It's safe to say the solar system has a LOT of heavenly bodies!