The Navagrahas (nine planets or nine realms) as per Sanskrit are: 1. Surya/Ravi : The Sun. 2. Chandra/Soma : The Moon. 3. Mangala : Mars. 4. Budha : Mercury. 5. Guru/Brishaspati : Jupiter. 6. Shukra : Venus. 7. Shani : Saturn. 8. read more
The Sun and the Moon aren’t planets. The nine planets (eight if you class Pluto separately as a “dwarf-planet” or subplanetary body) were not all known when Sanskrit was still a live language, so they do not all have sanskrit names. read more