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Galactic latitude is positive towards the north galactic pole, with a plane passing through the Sun and parallel to the galactic equator being 0°, whilst the poles are ±90°. [3] Based on this definition, the galactic poles and equator can be found from spherical trigonometry and can be precessed to other epochs; see the table.
The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies. The directions perpendicular to the galactic plane point to the galactic poles. In actual usage, the terms galactic plane and galactic poles usually refer specifically to the plane and poles of the Milky Way, in which Planet Earth is located.
The origin essentially coincides with the Earth, because the supergalactic plane is identified as a plane observed from Earth. The north supergalactic pole (SGB = 90°) lies in the constellation Hercules at galactic coordinates (l z = 47.37°, b z = +6.32°), or approximately RA = 18.9 h, Dec = +15.7°.
The galactic coordinate system uses the approximate plane of the Milky Way Galaxy as its fundamental plane. The Solar System is still the center of the coordinate system, and the zero point is defined as the direction towards the Galactic Center. Galactic latitude resembles the elevation above the galactic plane and galactic longitude ...
It is inclined at an angle of 25° to the plane of the sky, appearing nearly face-on. [10] Based on the size of the Einstein ring, this galaxy has a mass of about 10 11 M ☉, which is comparable to the Milky Way. [4] An independent analysis of the same imaging data suggested the possible presence of a main-sequence star within 0.5″ of the ...
The result yields a direction perpendicular to the galactic plane. [1] In the case of the Milky Way, this is given by the coordinates of the galactic pole. Galactic clusters [2] [3] are gravitationally bound large-scale structures of multiple galaxies. The evolution of these aggregates is determined by time and manner of formation and the ...
GRO J1655−40 and its companion are moving through the Milky Way at around 112 km/s (250,000 miles per hour), in a galactic orbit that depends on its exact distance, but is mostly interior to the "Solar circle", d~8,500 pc, and within 150 pc (~500 ly) of the galactic plane.
The inclination is at (an angle of) 23° ± 6° from the galactic plane, thus it reaches as much as 1.5 ± 0.4 kpc above the disk. [11] When passing through the disk, this cluster does so at less than 5 kpc from the galactic nucleus. The cluster undergoes tidal shock during each passage, which can cause the repeated shedding of stars. Thus the ...