• Source: R Trianguli

R Trianguli (abbreviated as R Tri) is a short-period oxygen-rich Mira variable in Triangulum with a period of 266.9 days, discovered by T. H. E. C. Espin in 1890. It is losing about 1.1×10−7 M☉/yr, close to average for a short-period Mira variable. While most short-period Mira variables reside in the Galactic halo, R Trianguli is a member of the thick disk, and its proper motion is fairly high for its distance. Its angular diameter in the K band was measured in 2002 to be, on average, 5.22±0.30 mas, with a shape suggesting that there is an optically thin disk structure surrounding the star.




References

Kata Kunci Pencarian:

• Alpha Trianguli Australis
• Roger Cotes
• Super raksasa
• R Trianguli
• Triangulum Australe
• R Trianguli Australis
• Triangulum
• Alpha Trianguli Australis
• Delta Trianguli
• Mira variable
• Alpha Trianguli
• 7 Trianguli
• Archenhold Observatory