What mass of material with a long tail that travels around the sun?

The mass of material with a long tail that travels around the sun typically refers to comets. Comets are composed of ice, dust, and rocky material, and as they approach the sun, the heat causes the ice to vaporize, creating a glowing coma and a tail that points away from the sun. The mass of a comet can vary significantly, ranging from a few hundred thousand to several billion kilograms, depending on its size and composition. The tail itself is not solid mass but rather a stream of gas and dust particles ejected from the comet's nucleus.