3 ms·
Of course, that definition is confusing, because it's an inverse thing - from the name you'd expect something 31 parsecs away to have a parallax of 31 arcsecond
by skykooler 7y ago
Of course, that definition is confusing, because it's an inverse thing - from the name you'd expect something 31 parsecs away to have a parallax of 31 arcseconds, but instead it's 1/31 of an arcsecond.