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The Triangulum Galaxy is a spiral galaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC ( New General Catalogue) 598 . With the D 25 isophotal diameter of 18.74 kiloparsecs (61,100 light-years ), the Triangulum Galaxy is the third-largest member of the Local Group of galaxies ...
The Triangulum Galaxy, also known as Messier 33, was discovered by Giovanni Battista Hodierna in the 17th century. A distant member of the Local Group, it is about 2.3 million light-years away, and at magnitude 5.8 it is bright enough to be seen by the naked eye under dark skies.
NGC 604 is an H II region inside the Triangulum Galaxy. It was discovered by William Herschel on September 11, 1784. It is among the largest H II regions in the Local Group of galaxies; at the galaxy's estimated distance of 2.7 million light-years , its longest diameter is roughly 1,520 light years (~460 parsecs ), over 40 times the size of the ...
in Triangulum Galaxy; luminous blue variable, V max = 15.4 m, V min = 16.6 m; one of the most luminous stars known: Var B: 01 h 33 m 49.20 s +30° 38′ 09.1″ 16.21: 3000000: A: in Triangulum Galaxy; luminous blue variable; one of the most luminous stars known: Var C: 01 h 33 m 35.14 s +30° 36′ 00.4″ 16.43: 3000000: B
The studies also suggest that M33, the Triangulum Galaxy—the third-largest and third-brightest galaxy of the Local Group—will participate in the collision event, too. Its most likely fate is to end up orbiting the merger remnant of the Milky Way and Andromeda galaxies and finally to merge with it in an even more distant future.
Triangulum II (Tri II or Laevens 2) is a dwarf galaxy close to the Milky Way Galaxy. Like other dwarf spheroidal galaxies, its stellar population is very old: the galaxy was quenched before 11.5 billion years ago. It contains only 1000 stars, yet is quite massive, having a solar mass to light ratio of 3600.
M33 X-7 is a black hole binary system in the Triangulum Galaxy. The system is made up of a stellar-mass black hole and a companion star. The black hole in M33 X-7 has an estimated mass of 15.65 times that of the Sun ( M☉) [3] [4] (formerly the largest known stellar black hole, though this has now been superseded amongst electromagnetically ...
List of Triangulum's suspected satellite galaxies. Triangulum Galaxy. The Triangulum subgroup is made up of the Triangulum Galaxy (M33) and its satellites. Although the Triangulum Galaxy does not have any proven satellite galaxies, a number of galaxies are suspected of being in the system.
Andromeda II (And II) is a dwarf spheroidal galaxy about 2.22 Mly away in the constellation Pisces. While part of the Local Group , it is not quite clear if it is a satellite of the Andromeda Galaxy or the Triangulum Galaxy .
M33 (the Triangulum Galaxy) is a direct vision naked-eye object; limiting magnitude with 12.5 in (32 cm) reflector is 17.5 (with effort) Venus and Jupiter affect dark adaptation; 2 Typical truly dark site 7.1–7.5 21.6–21.75 the zodiacal light is distinctly yellowish and bright enough to cast shadows at dusk and dawn
