[OSM-newbies] Systematic shift between streets and aerial photo

[Kjell Inge Tomren]

Hello!

I noticed there was a street name missing near my home and as my first edit i decided to add that name to OSM. The update was easy. I even did it from my tablet in bed this morning so i was inspired to do more. There are no numbers on the houses in my area, so i decided to register my own and I did it by pointing at my house in the background aerial photo and added the info for a house. But I noticed the position of the house was not correct vs the nearby streets.

After a closer look I noticed that there is a systematic shift between the streets in my area and the background aerial photo. Then I´m a bit stuck. Which is correct positioned? The street positions or the background aerial photo? How is it possible to correct a systematic error like this?

Here is a link to the area:
https://www.openstreetmap.org/edit#map=18/62.45124/6.36599

Best regards,
Kjlell Inge Tomren
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