Indeed Ingeniero the way i tried before to work it out was when they said they have 8 More Recharge Cycles, and there is 7 years 4 Months (88 Months) to Origae-6 which means 11 Months per Charge but that is not quite right because that would Factor in Recharging right on the Door-step.
If it was 9 months per Re-Charge then 8X9 =72 but the time to Origae-6 is 88 Months so that means they need 9 Recharges.
If it was 11 Months per Re-Charge then 8x11 = 88 Months which is the exact Journey time to Origae-6 which means last Charge is basically right on the Door Step.
So i think 10 Months per Charge sounds about right, but this is not FACT but only going with information we have given. Because with 8 Re-Charges left, would mean 80 Months which leaves them arriving at Origae-6 with TWO Months to another Re-Charge to go.
I would say a 9-12 Month Ball Park would be about right, but i am more inclined to think the Covenant had left Earth (or our System) 10 Months Prior.
@IgnorantGuy
I feel its a bit Spoon Fed, Lazy and Coincidence and not well thought out if we have it the Covenant Travels to near Zeta 2 Reticuli then has to Re-Charge, suffers Damage and then detects Planet 4 that is in the Same Constellation and more so if its within 10 Light years or less from LV-223/426... and then to have David Divert to LV-223
But i guess it cant be ruled out....
It depends on DAVIDS intentions... if his only Objective is to USE the Colonist to Mass Produce Xenomorphs then maybe YES LV-223 would be a Perfect Place to do so, but so would Planet 4 staying on Planet 4 i guess is a Risk due to chances of Neomorph infection to the Colonist but it depends HOW he goes about it, as he could maybe just Infect a few at a time on the Ship.
Going to LV-223 would put him closer to Earth, than Oriage-6 but then also if its on the Door Step to Planet 4 it wont take him long to get to LV-223 and Start Harvesting Humans for his Experiments/Xenomorph.
But this leaves him close to Earth 39 Light years, but Planet 4 was close too (maybe Cloaked in some way). But then we could say the Advent Viral and his Message to W-Y in Alien Covenant could indicate that he is going to Origae-6 so as to put them off where he is actually going (LV-223) so that they maybe would not come looking at Planet 4 or LV-223, but then the Advent he mentions who he is and the Prometheus Mission and so thats a Risk, because while it could make the Company send ships to Oriage-6 they could also send some to LV-223 or Planet 4 (well location of his Signal) I think David is someone who considers RISK, i think this is WHY in part he Bombarded the Engineers, because of the Chance of HOW they would react to him and Dr Shaw. I think David would not be so Naive as to take a risk of the Company getting to him and then Exploit his Experiments and then WHAT would they do with David?
If the Covenant arrived at Planet 4 in less than Year, and it is near LV-223 then the Company could get a Ship there within a year or less, and it would mean David would however be on LV-223 for up to a year (well near enough) is that enough time for him to Prepare Hell for them?
Then we have the risk of a Engineer coming back to Planet 4, but then if they came to Planet 4 and realized what happened and LV-223 was pretty close by then they would likely investigate and IF David is on LV-223 then that could throw a Spanner in his Works.
The Engineers WONT know where David is going, i doubt they could Track the Covenant all the way to Origae-6 unless they was close to Planet 4 by the time David leaves. David must know... IF they came back they could go to LV-223...
IF we have David be Clever, and he either feels Walter could inform the Engineers, or he goes and leaves clues on Planet 4 that the Ship David is on would be heading to Origae-6 and its location... and these provide a False Destination for the Engineers and Weyland-Yutani to go off to Origae-6.... so David can then go to LV-223 this could be a Good Plot, but one that still carries a Risk of the Engineers and Weyland-Yutani both going to LV-223 as well.
But we have to REMEMBER how may the Lazy Writers do it?
They could have David set-up a Wild Goose Chase to Origae-6 for them both (Engineers/Weyland-Yutani) and have them TAKE the Bait because they are well DUMB!!! and put all their Eggs in One Basket (No Pun Intended)
So David can go to LV-223 and start to Experiment, the PROBLEM is some of those Colonist would maybe realize LV-223 is NOT Origae-6, he maybe cant fool them into thinking it is... because its not as Habitable as Origae-6 was projected. This does-not matter if the PLOT is to have David use those Thousands of Good Souls to make EGGS.
But RS said the movie would not be about the Xenomorph (does not mean there wont be none) just that the Focus is more on AI, and there would be 3-4 incoming Parties which ONE is the Engineers.
But with ALIEN:COVENANT not doing well, and we have some Room to get to ALIEN yet... then if they decide they cant RISK doing TWO movies and settle on a SINGLE Movie that links to ALIEN then for Convenience, indeed a PLOT as outlined above, were David goes to LV-223 would be a Quicker, more Spoon Fed and Convenient way to get from COVENANT ====> ALIEN.
So when i look at it NOW.... then indeed this Predictable Path cant be ruled out as the preferred way to go.