The answer is my zodiac sign.
κπτυχ | εηδμθ | βαγδι | γδεζθ | αβγδε+1 | βθ40pε | δεζφλ
The answer to this is a sun, but that sun is inside the my constellation's zodiac sign.
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Scorpius and Antares
Just associative indices: REDACTED is 8 letter word to hide constellation and there are 7 groups of greek letters for the name of the sun (star).
REDacted associates to the colour of the star
There are not so much bright stars with commonly known names within zodiac, and only a few candidates of red colour, Aldebaran has 8 letters, Antares 7 letters. Choosing Scorpius instead of Scorpio achieves 8 letters for constellation.