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Ascella

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description Ascella Overview

Ascella, designated Zeta Sagittarii, is a binary star system located in the constellation Sagittarius. It is one of the brighter members of the prominent Teapot asterism, marking the lower southern edge of the formation. The system's primary star is a white main-sequence star, accompanied by a fainter subgiant companion star. The name Ascella is derived from Latin and translates to "armpit," reflecting its historical position on celestial maps.

help Ascella FAQ

What is Ascella's astronomical designation?

Ascella is designated Zeta Sagittarii. It is a binary star system in Sagittarius and forms part of the constellation's well-known Teapot asterism.

Where is Ascella in the Sagittarius Teapot?

Ascella marks the lower southern edge of the Teapot pattern. It is one of the brighter stars in that asterism, which makes it useful when identifying Sagittarius in the night sky.

Is Ascella one star or a binary system?

Ascella is a binary system rather than a solitary star. Its primary component is described as a white main-sequence star, accompanied by a fainter stellar partner.

What type of star is Ascella's primary component?

The primary component is a white main-sequence star. That means it is a hydrogen-burning star whose color and temperature are generally higher than those of the Sun.

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