Our galactic central black hole is calculated to have a mass of approximately 4.1 million solar masses Astronomers believe that the black hole in the M87 galaxy has a mass of approximately 6.4 billion (6.4×10^9) solar masses. We model the dynamical structure of M87 (NGC4486) using high spatial resolution long-slit observations of stellar light in the central regions, two-dimensional stellar light kinematics out to half of the effective radius, and globular cluster velocities out to 8 effective radii. The active galaxy M87 offers a convenient test case for the method due to the existence of a large amount of observational data on the jet and ambient environment properties in the central area of the object. The black hole at M87’s heart has the mass of about 3.5 billion Suns. The elliptical galaxy M87 is the home of several trillion stars, a supermassive black hole and a family of roughly 15,000 globular star clusters. This black hole is 6.5 billion times the mass of the Sun. A supermassive black hole is a black hole with a mass of the order of between 10^5 and 10^10 solar masses. The Event Horizon Telescope (EHT) team theorized that the M87 black hole grew to its massive size by merging with several other black holes. The stunning new image shows the shadow of the supermassive black hole in the center of Messier 87 (M87), an elliptical galaxy some 55 million light-years from Earth. It is large enough to swallow our entire solar system and has the same mass as 6.8 billion suns. Let us assume that most of that mass flowed into the black hole through an accretion disk that radiated 10% of the mass energy passing through it. Keep in mind, M87’s black hole is between about 3 and 7 billion times the mass of the Sun, or about 1,000 times more massive than the Milky Way’s black hole, Sagittarius A*. : kT = 0.91 keV and n e = 0.31 cm −3 at approximately r 0 = 0.22 kpc. It is possible that the core of M87 has more than one supermassive black hole. For comparison, our Milky Way galaxy contains only a few hundred billion stars and about 150 globular clusters. The point of no return: In astronomy, it’s known as a black hole — a region in space where the pull of gravity is so strong that nothing, not even light, can escape. It is surrounded by a disk of material that is slowly funneling into the black hole, heated by the action of a jet that is moving at very high speed out from the black hole. Black hole M87 is the largest identified so far. Using the Event Horizon Telescope, an international team of scientists has for the first time measured the radius of a black hole at the center of M87, a galaxy some 50 million light years from the Milky Way.. The black hole in the galaxy M87 has a mass of about 3 billion solar masses. The supermassive black hole is located at the heart of a galaxy called M87, located about 55 million light-years away, and weighs more than 6 billion solar masses. We use the closest to the central BH pressure and density measurements by Russell et al. We propose a new method of estimating the mass of a supermassive black hole residing in the centre of an active galaxy. M87’s black hole was too far away for astronomers to know precisely its mass before capturing the image. This gives the pressure amplitude P 0 = 0.45 × 10 −9 dyn cm −2 at r 0 = 0.22 kpc from the BH. 6 M87 BLACK HOLE MASS.