I got data from several cameras, so the path can be calculated:

- a.jpg (72.93 KiB) Viewed 5466 times
And it's altitude:

- b.jpg (24.1 KiB) Viewed 5466 times
Finally it's orbit:
[table][tr][td]
Summary:
[table][tr][td]Start height:[/td]
[td]115,5 km[/td][/tr]
[tr][td]End height:[/td]
[td]83.3 km[/td][/tr]
[tr][td]Start position:[/td]
[td]60.365N 11.212E[/td][/tr]
[tr][td]End position:[/td]
[td]60.067N 10.626E[/td][/tr]
[tr][td]Direction:[/td]
[td]224.6°[/td][/tr]
[tr][td]Incidence:[/td]
[td]34.9°[/td][/tr]
[tr][td]Entry speed:[/td]
[td]57,7 km/s[/td][/tr]
[tr][td]Radiant rectascension:[/td]
[td]02:18 (34.7°)[/td][/tr]
[tr][td]Radiant declination:[/td]
[td]51.4°[/td][/tr]
[tr][td]Associated swarm:[/td]
[td]Perseids[/td][/tr][/table]
[/td]
[td]
Orbital elements:
[table][tr][td]Perifocal distance:[/td]
[td]0.933 AU[/td][/tr]
[tr][td]Eccentrisity:[/td]
[td]0.628[/td][/tr]
[tr][td]Inclination:[/td]
[td]116.1°[/td][/tr]
[tr][td]Longitude of ascending node:[/td]
[td]129.3°[/td][/tr]
[tr][td]Argument of perihelion:[/td]
[td]142.3°[/td][/tr]
[tr][td]Mean anomaly:[/td]
[td]7.1°[/td][/tr]
[tr][td]Epoch:[/td]
[td]2018 AUG 01[/td][/tr][/table]
[/td]
[/tr]
[/table]
So this is clearly a Perseid. The high speed of 58 km/s make these brief meteors which tend to explode at high altitude. In this case at roughly 95 km altitude! Slow meteors have barely become visible at that altitude. The meteor totally disintegrates above noctilucent clouds.
But since the light source is quite close, the rays coming from it are far from parallel when they hit the cloud layer, compared to sunlight or even moonlight. Correct me if I'm wrong here, but I think that means it should decrease the size of the halo.
The halo is formed when light gets deflected through countless ice crystal, and the minimum deflection is just under 22 degrees, regardless of the distance to the light source. Like the rainbow, distance to the light source doesn't matter. But I think the ice crystals of noctilucent clouds are different. Perhaps such halos wont form through these crystals. Perhaps we don't know. I'll ask an expert for his opinion.