The Bayer designation Tau Serpentis (τ Ser / τ Serpentis) is shared by a collection of eight stars, τ¹ Serpentis through τ⁸ Serpentis, in the head of the constellation Serpens. They are distributed within a box of size 40 minutes in right ascension by 3.5° in declination. They are numbered by increasing right ascension:

• Tau¹ Serpentis, also designated 9 Serpentis or HD 137471.
• Tau² Serpentis, also designated 12 Serpentis or HD 138527.
• Tau³ Serpentis, also designated 15 Serpentis or HD 139074.
• Tau⁴ Serpentis, also designated 17 Serpentis or HD 139216.
• Tau⁵ Serpentis, also designated 18 Serpentis or HD 139225.
• Tau⁶ Serpentis, also designated 19 Serpentis or HD 140027.
• Tau⁷ Serpentis, also designated 22 Serpentis or HD 140232.
• Tau⁸ Serpentis, also designated 26 Serpentis or HD 140729.

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