It's a different story in A New Hope when Obi-Wan is older and slower - given this is ground zero for the Star Wars timeline, taking place in 0 BBY, it means Darth Vader is 41 years old at this point, while Obi-Wan is 57 when he dies.
Anakin's birth took place in 41 BBY, establishing him as 16 years younger than Obi-Wan. At the moment of his discovery on Tatooine by Obi-Wan and Qui-Gon, Anakin was merely nine years old. By the time of “Attack of the Clones,” he had reached 19 years, and in “Revenge of the Sith,” he was 22.
The main out-of-universe reason for the Jedi Master's seemingly rapid aging is that Obi-Wan is played by different actors in those films: Alec Guinness in A New Hope and Ewan McGregor in the prequel series and the Disney+ series.
A New Hope, the movie used as a reference for the Star Wars timeline, takes place in 0 BBY. Therefore, Obi-Wan is 57 years old in A New Hope. Sir Alec Guinness, who played Obi-Wan Kenobi in the original Star Wars trilogy, was 62 years old when filming A New Hope.
How old was Obi-Wan Kenobi when he trained Anakin?
The 1999 film Star Wars: Episode I - The Phantom Menace takes place in 32 BBY. In the film, a 25-year-old Obi-Wan meets a young Anakin Skywalker, subsequently becoming the boy's master when Qui-Gon dies at the hands of Darth Maul.
DARTH VADER FINALLY FORGIVES OBI-WAN KENOBI(CANON) - Star Wars Comics Explained
How old is Obi when he dies?
In reality, in A New Hope Obi Wan was 57 and in Return of the Jedi Anakin was 45. We know that Obi Wan was always Anakin's master, so Obi Wan is older. It's possible that Obi Wan was originally supposed to be in his 70s when he died and Anakin in his 60s.
1 Darth Vader Was 45 When He Died In Return Of The Jedi
Luke's faith in his father leads to his redemption, with Anakin turning against Palpatine at last. The greatest hero of Star Wars is redeemed when he is just 45 years old, finding peace in the Force at last.
The Star Wars timeline revolves around the Battle of Yavin, which serves as a reference point for the events and origins of all characters. Darth Vader spent half of his life as Anakin Skywalker before turning to the Dark Side and dying in Return of the Jedi at the age of 45.
Back to childhood. That means Luke Skywalker will be 9 or 10 years old when the series begins. Obi-Wan, meanwhile, will be about 48 years old, just nine years after his death in A New Hope.
Of course, the main reason Obi-Wan couldn't kill Vader in that moment was for the sake of the original trilogy canon. However, even if canon wasn't an issue, it still would've been out of character for Obi-Wan to kill Vader in that moment. Obi-Wan has never been one to take joy in enacting revenge.
Well, because it's TATOOINE, it is a desert planet with 2 suns so people age faster there. Which is why Obi-Wan looks like he's in his 60s in ANH when he's only 57.
He would have been in his 30s for most of Rebels. He was in his 40s during the original trilogy, 41 standard in 3277 (Rogue One, ANH), and 45 when he died in 3281.
During the battle, Anakin, who had been known as the Sith Lord Darth Vader, was redeemed by Luke and brought balance to the Force. However, the redemption cost Anakin his life, having been mortally wounded by the Emperor, Darth Sidious, while killing his former Master. After his death, Anakin became one with the Force.
Kylo/Ben was born about a year after Return of the Jedi so he's roughly 29 when we first see him in The Force Awakens, also possibly having turned 30 during The Last Jedi.
Anakin Skywalker's birth mystery is solved - his mother, Shmi Skywalker, reveals that there was no father and she can't explain what happened. Qui-Gon Jinn believed that the Force itself created Anakin in Shmi's womb, making him the Chosen One who would bring balance to the Force.
The Prime Jedi was an individual who became the first Jedi to ever use the Force. The Prime Jedi was also the founder of the Jedi Order, which they established on the planet Ahch-To around 25,025 BBY.
In canon no Obi-Wan doesn't have kids. However, there is this theory where he and Satine had a child together but she hide it from him, knowing how it could ruin his jedi career. This child would be Satine's “nephew” Korkie Kryze…
Obi-Wan allows Vader to strike him down, and, because through the Force the darkness of space cannot claim a victim, his body mysteriously vanishes the moment he dies. At the climax of the film, during the Rebel attack on the Death Star, Obi-Wan speaks to Luke through the Force to help him destroy the battle station.
During his Padawan training, Obi-Wan and Qui-Gon Jinn were assigned to be bodyguards to Duchess Satine Kryze of Mandalore. They spent nearly a year together, often unsure of what fate the next day would bring. Eventually, the two fell in love, and during their private moments, Satine affectionately called him “Ben”.
