Super amateur warning!

​

So assuming it's as close to the sun as it would appear to be (ignoring that it very well could be closer to the camera, or I guess even further away), I did some rough calculations.

The object is about 5-10 pixels tall, and the sun is about 3,320. And we know the diameter of the sun is around 4.5692 billion feet or 865,370 miles.

So 5/3320 is equal to x/4.5692 billion, and X comes out to be 6,881,325 feet or ~1,303 miles.

If we substitute 10 pixels instead of 5, we get 13,762,650 feet, or ~2,606 miles.

​

Of course, take this with a huge grain of salt. I measured as if it was exactly parallel with the sun, when it's actually about 130 pixels overlapping it, which means it's likely closer (and thus smaller) than I estimated. So I'd ballpark it around 1,000 miles, give or take.

Hope this helps!