Ali Osman was going through a daily routine with his one year old girl when he encountered the bizarre object outside his window.
Civil engineer Ali, from Erith, south east London, snapped these pictures of the orb, which resembles a massive fireball or flaming meteorite.
The married dad-of-one said: “I woke up with my daughter around 6am.
“I always have a look out the window in the mornings to show my daughter the birds and noticed this strange object in the sky.
“At first I thought it was a plane that leaves a trial behind it but realised quickly it wasn’t because it was just hovering.
“There were other planes flying high near the object but the object was above the planes and was stationary.
“I observed it for around 20 minutes. I thought it might have been the Chinese Space lab [Tiangong-2, which was launched on the same day] but the launch happened at 2pm GMT.
“Personally, I’m not sure what the object was. All I know is that it had to have been a massive object to appear as big as it did in the sky.”