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Ursa Major and Polaris with names of bright stars in the Big Dipper The constellation Ursa Major as it can be seen by the unaided eye The outline of the seven bright stars of Ursa Major form the asterism known as the " Big Dipper " in the United States and Canada, while in the United Kingdom it is called the Plough [ 6 ] or (historically ...
Twice in each sidereal day Polaris's azimuth is true north; the rest of the time it is displaced eastward or westward, and the bearing must be corrected using tables or a rule of thumb. The best approximation [33] is made using the leading edge of the "Big Dipper" asterism in the constellation Ursa Major.
Nu Ursae Majoris (ν Ursae Majoris, abbreviated Nu UMa, ν UMa), formally named Alula Borealis / ə ˈ l uː l ə b ɒ r i ˈ æ l ɪ s /, [10] [11] is a double star in the northern circumpolar constellation of Ursa Major. At an apparent visual magnitude of +3.490, [2] it is bright enough to be seen with the naked eye.
Based on the numbers of its constituent stars, the Ursa Major Moving Group is believed to have once been an open cluster, having formed from a protostellar nebula approximately 500 million years ago. Since then, the sparse group has scattered over a region about 30 by 18 light-years, whose center is currently about 80 light-years away, making ...
Ursa Major's website features the launch of a Javelin anti-tank missile, a weapon heavily used in Ukraine's efforts to combat the Russian invasion for the last two years. Ursa Major says it can ...
U.S. rocket propulsion startup Ursa Major said on Tuesday it was awarded a $12.5 million contract to build out production and testing for new solid fuel rocket engines. The award, though small, is ...
26 Ursae Majoris is a single [9] star in the northern circumpolar constellation of Ursa Major, located 262 light years away from the Sun. [1] It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.47. [2] The object is moving further from the Earth with a heliocentric radial velocity of +22 km/s. [5]
Book plate by Sidney Hall depicting Ursa Major's stars A light curve for Epsilon Ursae Majoris, plotted from TESS data [11] According to Hipparcos, Epsilon Ursae Majoris is 81 light-years (25 parsecs) from the Sun. Its spectral type is A1p; the "p" stands for peculiar, as its spectrum is characteristic of an α 2 Canum Venaticorum variable.