Question

which is the nearest black hole to our planet? and what is its distance from our planet?​

Answer 1

Answer:

The closest black hole we know of is V616 Monocerotis, also known as V616 Mon. It's located about 3,000 light years away, and has between 9-13 times the mass of the Sun

Answer 2

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There is a newly discovered stellar blackhole in a somewhat nearby star system HR7819. And the closest supermassive BH “most likely “ is Sagittarius A which is ~25k LY’s away. Though there has been evidence that our Galaxy could harbor two supermassive blackholes. If this were true, it is highly unlikely to have 4M Solar masses as Sag A at our galactic center. Although obviously the structure of stellar and supermassive blackholes is fundamentally dissimilar, in terms of scope and scale, these two are also very different animals.

HR7819 is located about a 1000 LY away and is 2500 LY’s closer than the next.

Why I would classify each as a distinct thing is mainly the sheer scale of each.

HR 6819 has a diameter of 25 Miles. It is only about 2.5–2.9 Solar Masses with the lowest stellar blackholes limit of 2.19 - at which point its neutrons would no longer degenerate. This is a very low mass and quiet blackhole. While it contains roughly three times the mass of the sun, its dimensions are close to something not much larger than the horizon line seen below. To fit three suns into the Chesapeake bay gives you just an idea of how dense these objects are.