In Alien: Covenant the ship was heading to Origae-6.
After the neutrino blast and receiving the signal from Elizabeth Shaw the crew found out that near their position was a planet that was substantially closer and more habitable than Origae-6.
In the dialog between crew members it was stated that it took years to search for the habitable planet. On the other hand the Engineers' Planet was in the database the whole time.
Why wasn't this planet the original destination of Covenant?