The primary component is a red M-type bright giant, and the secondary is a B-type main-sequence star.

[2] It is approximately 430 light years from Earth, based on its Gaia Data Release 2 parallax.

[1] Delta Sagittae is a spectroscopic binary with a composite spectrum, meaning that light from both stars can be detected.

[4] It is also a variable star, with its brightness changing between a maximum of magnitude 3.75 and a minimum of 3.83 in an unpredictable way.

Consequently, the Chinese name for δ Sagittae itself is 左旗三 (Zuǒ Qí sān, English: the Third Star of Left Flag.