• Thumbnail for Brown dwarf
    Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars. Their...
    162 KB (17,784 words) - 07:01, 29 October 2024
  • is a list of brown dwarfs. These are objects that have masses between heavy gas giants and low-mass stars. The first isolated brown dwarf discovered was...
    109 KB (3,653 words) - 15:18, 27 October 2024
  • Thumbnail for Sub-brown dwarf
    A sub-brown dwarf or planetary-mass brown dwarf is an astronomical object that formed in the same manner as stars and brown dwarfs (i.e. through the collapse...
    11 KB (1,328 words) - 06:40, 18 August 2024
  • object with the spectral type T (also called T dwarf or methane brown dwarf) is either a brown dwarf or young free-floating planetary-mass object. An...
    47 KB (4,983 words) - 07:32, 17 October 2024
  • Thumbnail for Red dwarf
    These red dwarfs have spectral types of L0 to L2. There is some overlap with the properties of brown dwarfs, since the most massive brown dwarfs at lower...
    36 KB (4,244 words) - 21:44, 20 September 2024
  • Thumbnail for Brown-dwarf desert
    The brown-dwarf desert is a theorized range of orbits around a star within which brown dwarfs are unlikely to be found as companion objects. This is usually...
    6 KB (741 words) - 16:06, 18 July 2024
  • Thumbnail for Black dwarf
    dwarfs is one observational limit on the universe's age. The name "black dwarf" has also been applied to hypothetical late-stage cooled brown dwarfs –...
    10 KB (1,142 words) - 05:00, 25 July 2024
  • Thumbnail for White dwarf
    A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to the Sun's...
    153 KB (17,798 words) - 02:27, 20 September 2024
  • Thumbnail for Planetary-mass object
    planets) or formed through cloud-collapse rather than accretion (sub-brown dwarfs). While the term technically includes exoplanets and other objects, it...
    18 KB (1,994 words) - 22:45, 14 August 2024
  • Thumbnail for Dwarf star
    A dwarf star is a star of relatively small size and low luminosity. Most main sequence stars are dwarf stars. The meaning of the word "dwarf" was later...
    5 KB (578 words) - 17:18, 25 June 2024
  • An object with a spectral type Y (also called Y dwarf) is either a brown dwarf or a free-floating planetary-mass object. They have temperatures below around...
    56 KB (5,637 words) - 12:33, 18 October 2024
  • Thumbnail for Dwarf planet
    Nine likeliest dwarf planets and dates of discovery A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough...
    98 KB (8,993 words) - 10:49, 2 November 2024
  • Thumbnail for List of nearest stars
    This list covers all known stars, white dwarfs, brown dwarfs, and sub-brown dwarfs within 20 light-years (6.13 parsecs) of the Sun. So far, 131 such objects...
    115 KB (5,343 words) - 22:56, 29 October 2024
  • brown dwarfs would have ceased fusion long before their discovery. Binary stars and other multiple-star formations are common, and many brown dwarfs orbit...
    84 KB (10,296 words) - 18:41, 28 October 2024
  • An object with the spectral type L (also called L-dwarf) can be either a low-mass star, a brown dwarf or a young free-floating planetary-mass object. If...
    34 KB (3,773 words) - 01:47, 9 October 2024
  • Thumbnail for Stellar classification
    "Yellow" dwarfs such as the Sun are white, "red" dwarfs are a deep shade of yellow/orange, and "brown" dwarfs do not literally appear brown, but hypothetically...
    106 KB (11,554 words) - 02:45, 23 October 2024
  • This is a list of stars, neutron stars, white dwarfs and brown dwarfs which are the least voluminous known (the smallest stars by volume). This is a list...
    149 KB (13,156 words) - 20:04, 1 November 2024
  • Thumbnail for Exoplanet
    fusion of deuterium), it is too massive to be a planet and might be a brown dwarf. Known orbital times for exoplanets vary from less than an hour (for...
    148 KB (15,970 words) - 14:48, 26 October 2024
  • Thumbnail for Planet
    generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The Solar System has eight planets by the most...
    197 KB (20,760 words) - 20:14, 24 October 2024
  • of planetary mass which is not gravitationally bound to any star or brown dwarf. Rogue planets may originate from planetary systems in which they are...
    83 KB (8,166 words) - 10:05, 4 November 2024
  • Thumbnail for List of largest exoplanets
    stellar scale. Then there is the fact that these objects might be brown dwarfs, sub-brown dwarfs, or not exist at all. Because of this, this list only cites...
    190 KB (11,724 words) - 14:40, 4 November 2024
  • Thumbnail for Perovskite
    occurs in carbonatite near Schelingen, Kaiserstuhl, Germany. In stars and brown dwarfs the formation of perovskite grains is responsible for the depletion of...
    16 KB (1,588 words) - 00:55, 11 October 2024
  • Thumbnail for HD 190655
    HD 190655 (category Brown dwarfs)
    G-type subgiant in a wide binary, with a transiting brown dwarf orbiting the latter. The brown dwarf component is notable in that it is one of the most...
    15 KB (1,102 words) - 00:18, 27 October 2024
  • Thumbnail for J1407b
    J1407b is a substellar object, either a free-floating planet or brown dwarf, with a massive circumplanetary disk or ring system. It was first detected...
    39 KB (3,908 words) - 00:26, 31 October 2024
  • Thumbnail for Stellar evolution
    hydrogen to begin. These are known as brown dwarfs. The International Astronomical Union defines brown dwarfs as stars massive enough to fuse deuterium...
    50 KB (6,476 words) - 03:27, 27 October 2024
  • Thumbnail for Gliese 229
    Gliese 229 (category T-type brown dwarfs)
    written as Gl 229 or GJ 229) is a multiple system composed of a red dwarf and two brown dwarfs, located 18.8 light years away in the constellation Lepus. The...
    28 KB (2,464 words) - 22:22, 26 October 2024
  • KMT-2020-BLG-0414L (category Brown dwarfs)
    white dwarf star about 4,000 light-years away in the constellation Sagittarius, which is orbited by an Earth-mass exoplanet and a brown dwarf. This system...
    5 KB (445 words) - 02:33, 18 October 2024
  • Thumbnail for Lists of astronomical objects
    List of dwarf planets List of possible dwarf planets Lists of planets List of nearest exoplanets List of largest exoplanets List of brown dwarfs List of...
    7 KB (544 words) - 05:30, 23 September 2024
  • titleholders of being the red dwarf with the smallest volume, and its succession over time. List of least massive stars List of brown dwarfs Lists of stars Croswell...
    17 KB (846 words) - 20:53, 30 October 2024
  • Thumbnail for Castor (star)
    YY Geminorum. A 2018 study proposed the existence of a possible circumbinary brown dwarf companion to YY Geminorum (Castor C) based on eclipse timing variations...
    24 KB (1,754 words) - 15:59, 26 October 2024