---
name: τ Oph
constellation: Oph
created_by: editor.cs
created_date: 2023-11-05 17:30:45.005097
updated_by: editor.cs
updated_date: 2023-11-05 17:30:45.005102
---
A binary star, which consists of a beautiful but close pair of yellow stars with magnitudes of 5.2 and 5.9, respectively, and a period of 280 years. Currently, their separation is about 1.7", but it is still decreasing. At a distance of 100", we can find a guide star with a brightness of 9.3 mag.