While the method of trigonometric parallax provides accurate distances without underlying astrophysical assumptions, it is limited to distances of less than 500-1000 parsecs by current technology.
This distance measurement is "the most accurate distance to a Cepheid" according to the lead author of the paper that reported the results.
In December 2005, American astronomer Eric Mamajek reported a more accurate distance (53 6 parsecs) to 2M1207 using the moving cluster method.
Using his odometer (see below), the guide had the most accurate distances of the day.
Great battery life, great built-in software, very accurate distance and speed.
He missed- the nine-millimeter rounds everyone carried weren't meant for accurate sniping over long distances.
Therefore, accurate distances were needed and could only be obtained after the European Hipparcos satellite in the mid-90s.
Therefore, comparing the observed X-ray flux to the predicted value yields relatively accurate distances.
The relative ping times can then be translated into quite accurate local distances.
The maximum accurate distance of wadcutters varies considerably with the shape of the front of the bullet.