Recent Distance Estimates
At least two techniques have been used to measure distances to Sculptor in the past ten years.
Using the planetary nebula luminosity function method, an estimate of 10.89 +0.85
−1.24 Mly (3.34 +0.26
−0.38 Mpc) was achieved in 2006.
Sculptor is close enough that the tip of the red giant branch (TRGB) method may also be used to estimate its distance. The estimated distance to Sculptor using this technique in 2004 yielded 12.8 ± 1.2 Mly (3.94 ± 0.37 Mpc).
A weighted average of the most reliable distance estimates gives a distance of 11.4 ± 0.7 Mly (3.5 ± 0.2 Mpc).
Read more about this topic: Sculptor Galaxy
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