Search results
Results From The WOW.Com Content Network
A white dwarf, then, packs mass comparable to the Sun's into a volume that is typically a million times smaller than the Sun's; the average density of matter in a white dwarf must therefore be, very roughly, 1 000 000 times greater than the average density of the Sun, or approximately 10 6 g/cm 3, or 1 tonne per cubic centimetre. [1]
BPM 37093 (V886 Centauri) is a variable white dwarf star of the DAV, or ZZ Ceti, type, with a hydrogen atmosphere and an unusually high mass of approximately 1.1 times the Sun's. It is 48 light-years (15 parsecs) from Earth in the constellation Centaurus and vibrates; these pulsations cause its luminosity to vary.
An exoplanet orbits PSR B1620-26 and its white dwarf companion (see below) in a circumbinary orbit. HD 49798: 1,600 White dwarf: One of the smallest white dwarf stars known. [14] ZTF J1901+1458: 1,809 Currently the most massive white dwarf known. [15] Janus: 3,400 A white dwarf with a side of hydrogen and another side of helium. [16] Wolf 1130 ...
These lists contain the Sun, the planets, dwarf planets, many of the larger small Solar System bodies (which includes the asteroids), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near-Earth objects.
Like other white dwarfs, it is a very dense star: its mass has been estimated to be about 67% of the Sun's, [27] yet it has only 1% of the Sun's radius (1.23 times the Earth's radius) [7] [a] The outer atmosphere has a temperature of approximately 6,110 K, [27] which is relatively cool for a white dwarf. As all white dwarfs steadily radiate ...
Like all white dwarfs, it is incredibly dense, packing about 70% of the sun's mass into an Earth-sized object. ... "Our sun will become a white dwarf in 5 billion years," Farihi said, "and will ...
The Sun is a G-type main-sequence star (G2V), informally called a yellow dwarf, though its light is actually white. It formed approximately 4.6 billion [a] years ago from the gravitational collapse of matter within a region of a large molecular cloud.
The researchers estimated that the white dwarf is orbiting the black hole at about 5% the distance that separates Earth from the sun, or a bit under 5 million miles (8 million km).