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...

intimately tied to the surface temperature, and brown dwarfs occupy types M, L, T, and Y. As brown dwarfs do not undergo stable hydrogen fusion, they cool...

is a list of astronomical objects with the spectral type Y. They are a mix of brown dwarfs and planetary-mass objects. They are the coldest such objects...

with a young age can also be a T-dwarf. T dwarfs are colder than L dwarfs, but warmer than Y dwarfs. The first T-dwarf discovered was Gliese 229B, which...

non-stellar objects have also been assigned letters: D for white dwarfs and L, T and Y for Brown dwarfs. In the MK system, a luminosity class is added to the spectral...

J0336−0143 or W0336, is a binary system comprising two planetary-mass Y-type brown dwarfs tightly orbiting around their common center of mass. The system is...

verification, of which 38 are Y dwarf candidates. In July 2018 an update on the project's blog stated that in total 42 brown dwarfs had been spectroscopically...

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...

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...

Substellar Mass Function Based on the Full-sky 20-pc Census of 525 L, T, and Y Dwarfs". The Astrophysical Journal Supplement Series. 253 (1): 7. arXiv:2011.11616...

massive (>5 MJ) and belong to the L- and T-dwarfs. There is however a small growing sample of cold and old Y-dwarfs that have estimated masses of 8-20 MJ....

constellation) at 15.5 light-years from Earth. It is the second closest Y-dwarf as of February 2024. WISE 1639−6847 was discovered in 2012 by C. G. Tinney...

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 Y-dwarfs...

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...

henshalli Y Y Alabama shad Alosa alabamae Y Y Y Albacore Thunnus alalunga Y Y Alewife Alosa pseudoharengus Y Y Y Alligator gar Atractosteus spatula Y Y Largest...

Dwarfing is a process in which a breed of animals or cultivar of plants is changed to become significantly smaller than standard members of their species...

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...

clusters. Its observations also supported the discovery of the first Y-type brown dwarf and Earth trojan asteroid. WISE performed an all-sky astronomical...

T-type and finally arriving at Y-dwarf with decreasing temperature. The atmosphere is hydrogen rich and a brown dwarf is 70% hydrogen by mass. Several...

al. presented discovery of seven brown dwarfs – one of T9.5 type, and six of Y-type – first members of the Y spectral class, ever discovered and spectroscopically...

observations with Keck/NIRES found it to be a nearby and unusual blue Y-dwarf. A Spitzer follow-up program found a parallax of 145.0 ± 14.7 mas, which...

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...

A dwarf (pl. dwarfs or dwarves) is a type of supernatural being in Germanic folklore. Accounts of dwarfs vary significantly throughout history; however...

al. presented discovery of seven brown dwarfs — one of T9.5 type, and six of Y-type — first members of the Y spectral class, ever discovered and spectroscopically...

short) is a sub-brown dwarf 2.28±0.01 parsecs (7.43±0.04 light-years) from Earth, therefore the fourth-closest star or (sub-) brown dwarf system to the Sun...

was published in 2014 by Cushing et al. WISE J2209+2711 is one of a few Y-dwarfs observed with JWST NIRSpec and MIRI. The modelling re-produced the spectrum...

A red dwarf is the smallest kind of star on the main sequence. Red dwarfs are by far the most common type of fusing star in the Milky Way, at least in...

Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs". The Astrophysical Journal Supplement Series. 253 (1): 7. arXiv:2011.11616...

The temperature of 275 K is slightly warmer or similar to the nearby Y-dwarf WISE J0855−0714 (225 to 260 K or 285 K), making Epsilon Indi Ab likely...

List of brown dwarfs List of nearest stars and brown dwarfs List of Y-dwarfs These 98 brown-dwarf systems are among the first brown-dwarf systems discovered...