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A better view of it shows on timelapse (2 frames). The imagery surrounding this capture shows it is not there for long, suggesting the object is active. Dimensions roughly match Su-30 rather than Mig-29 (currently high margin of error due to low-res imagery)
The first tool fotoforensics.com allows you to analyse photos for manipulation with approaches such as Error Level Analysis and metadata scraping.


Sadly, it is not perfect, and if an image is lightly edited with content of the same error level (eg things move around in the same image), then it is much harder to detect. 
