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Additionally, astronomers have found 6 white dwarfs (stars that have exhausted all fusible hydrogen), 21 brown dwarfs, as well as 1 sub-brown dwarf, WISE 0855−0714 (possibly a rogue planet). The closest system is Alpha Centauri , with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth.
First solitary white dwarf Van Maanen 2: 1917 Van Maanen's star is also the nearest solitary white dwarf [5] First white dwarf with a planet WD B1620−26: 2003 PSR B1620-26 b (planet) This planet is a circumbinary planet, which circles both stars in the PSR B1620-26 system [6] [7] First singular white dwarf with a transiting object WD 1145+017 ...
Van Maanen 2, or van Maanen's Star, is the closest known solitary white dwarf to the Solar System. It is a dense, compact stellar remnant no longer generating energy and has equivalent to about 68% of the Sun's mass but only 1% of its radius. [ 9 ]
A light-year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km). ... eventually leaving behind a compact core roughly the diameter of Earth - the white dwarf. This one ...
A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: in an Earth sized volume, it packs a mass that is comparable to the Sun. No nuclear fusion takes place in a white dwarf; what light it radiates is from its residual heat. [1]
G 240-72 is the seventh closest white dwarf (after Sirius B, Procyon B, van Maanen's star, Gliese 440, 40 Eridani B and Stein 2051 B). Its trigonometric parallax , as measured by the Gaia space telescope, is 160.9952 ± 0.0119 mas , [ 1 ] corresponding to a distance of 6.2114 parsecs (20.259 light-years ).
LP 658-2 is a degenerate (white dwarf) star in the constellation of Orion, [3] the single known object in its system. It has an apparent visual magnitude of approximately 14.488. [ 2 ]
Gliese 440, also known as LP 145-141 or LAWD 37, [4] is a white dwarf located 15.1 light-years (4.6 parsecs) from the Solar System in the constellation Musca, the nearest star in this constellation. [ 16 ] [ 17 ] It is the fourth closest white dwarf, after Sirius B , Procyon B , and van Maanen's star . [ 18 ]