Rho Aquilae

Distance, proper motion and constellation

The annual parallax shift is 21.75 milliarcseconds, Rho Aquilae is therefore a rare occurrence of a mismatch between current constellation and Bayer designation constellation. The star is in the low-northern constellation of Delphinus therefore at least seasonally visible to all but the high southern latitudes. It is currently moving closer to the Sun.

Chinese constellations and components

This star has the traditional name Tso Ke, from the Cantonese 左旗 jo keih meaning "the left flag". In Chinese, 左旗 (Zuǒ Qí in Mandarin), within the Ox, refers to an asterism consisting of this star, α, β, γ, δ, ζ, 11, 13, and 14 Sagittae stars of Sagitta to the west. Consequently, ρ Aquilae itself is known as 左旗九 (Zuǒ Qí jiǔ, .)

Physical characteristics

Rho Aquilae is an A-type main sequence star with a stellar classification of A2 V. This star is about 400 million years old and it displays an excess emission of infrared radiation that may be explained by a circumstellar disk of dust.

References

References

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