The star in the east, the fire in the dawn.

Definition/Summary:

Phosphorus aka Morning Star

• The planet Venus in its morning 
• This celestial object was named when stars and planets appeared at that time

“Light-bringing” to, the dawn

• Hebrew adopted the name origin of Lucifer

Expanded info:

Mythology

• Hesiod calls Phosphorus a son of Astraeus and Eos, but other say of Cephalus and Eos, or of Atlas.
• Poet Ovid, speaking of Phosphorus and Hesperus (the Evening Star, the evening appearance of the planet Venus) as identical, makes him the father of Daedalion. 
• Ovid also makes him the father of Ceyx, while the Latin grammarian Servius makes him the father of the Hesperides or of Hesperis
• While at an early stage the Morning Star (called Phosphorus and other names) and the Evening Star (referred to by names such as Hesperus) were thought of as two celestial objects, they were accepted as the two being the same

Add/Misc:

Hesperus is Phosphorus

• Appearances can be deceiving. To the ancient Greeks, the morning and evening skies were home to two stars, Phosphorus at the beginning of the day and Hesperus at twilight. But the Babylonians knew what it took the Greeks centuries to discover: The morning and evening stars were one and the same — the planet Venus, viewed through two different lenses, from two different perspectives.