How accurate is the distance to M4 and its stars according to different sources?

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snorkack
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How far is M4? I have seen contradictory numbers for M4 and stars in it.
How precise is Gaia in measuring the radial distances to various stars in M4? Their radial position relative to each other? Their peculiar motions?
What kinds of orbits do stars in the outskirts of M4 follow? High eccentricity orbits that bring them to cluster interior on each periapse, or low eccentricity orbits that stay on the outskirts of cluster all along?
Does Gaia have the precision to measure peculiar accelerations of stars in globular clusters?
 
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snorkack said:
I have seen contradictory numbers for M4 and stars in it.
Where?
 
malawi_glenn said:
Where?
This:
https://en.wikipedia.org/wiki/Messier_4
offers 7200 ly, (2200 pc) with reference to
https://ui.adsabs.harvard.edu/abs/1985A&A...143...8C
But it also claims PSR B1620−26 as a member (rather than a background object), reference to https://esahubble.org/images/potw1236a/
This:
https://en.wikipedia.org/wiki/PSR_B1620−26
claims the distance to PSR B1620−26 as 3800 pc (12 400 ly), source:
http://exoplanet.eu/catalog/psr_b1620-26_(ab)_b/
This:
https://www.eso.org/public/images/m4/
quotes 5500 ly
5500 ly and 12400 ly is a gross difference. Does Gaia have any comment?