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A1 was/is brighter than the mags you quoted, latest ones I have seen indicate somewhere between 5.4 and 5.8, atm.
It has performed better than it was initially predicted too - ephemeris's/orbital elements are often not very accurate when dealing with magnitudes, they are just a guide/guesstimate - only the positions should be taken seriously.
Magnitude estimates during bright moonlit periods are slightly unreliable. One reason this is so, is because the outer coma often can become washed out, leading to slightly different readings than if it wasnt so.
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