It is impossible for me to tell what astronomical objects or man-made satellite might have been involved because you didn't tell me where you are located on Earth. At 7:30 PM, the sky was too bright for you to have seen any satellites. If you were looking south-east or so, it could have been Jupiter, but not seen brightly in the twilight sky. I am pretty stumped about this question because of the lack of information about the object's direction, apparent rate of speed etc.