A substellar object, sometimes called a substar, is an astronomical object, the mass of which is smaller than the smallest mass at which hydrogen fusion...

J1407b is a substellar object, either a free-floating planet or brown dwarf, with a large circumplanetary disk or ring system. It was first detected by...

end as dispersed cold particles or some form of compact stellar or substellar object, according to thermodynamics. The stars called white or degenerate...

This article documents the most distant astronomical objects discovered and verified so far, and the time periods in which they were so classified. For...

Young stellar object (YSO) denotes a star in its early stage of evolution. This class consists of two groups of objects: protostars and pre-main-sequence...

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...

any white dwarf to have yet cooled to "black". A brown dwarf is a substellar object not massive enough to ever fuse hydrogen into helium, but still massive...

also been applied to hypothetical late-stage cooled brown dwarfs – substellar objects with insufficient mass (less than approximately 0.07 M☉) to maintain...

A Thorne–Żytkow object (TŻO or TZO), a type of hybrid star, is a conjectured type of star wherein a red giant or red supergiant contains a neutron star...

gravitationally bound non-stellar objects in orbit around a star or star system Substellar object – Astronomical object without the mass to sustain hydrogen...

nighttime, albedo describes solar reflections from other Solar System objects, including moonlight, planetshine, and zodiacal light. Observation and...

burning, is a nuclear fusion reaction that occurs in stars and some substellar objects, in which a deuterium nucleus (deuteron) and a proton combine to form...

2007 was interpreted as a substellar object with a circumstellar disk or massive rings transiting the star. This substellar object, dubbed "J1407b", is most...

Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars. They are formed when narrow jets of partially ionised gas ejected...

planet Hot Jupiter Red dwarf Rogue planet Substellar object List of planet types Lists of astronomical objects Working Group on Extrasolar Planets – Definition...

is no hydrostatic equilibrium at or below this limiting temperature. The object would then quickly dissipate, leaving behind the intermediate mass black...

NIRCam data and found that most JuMBOs did not appear in his sample of substellar objects. Moreover the color was consistent with reddened background sources...

The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It formed about 4.6 billion years ago when a dense region...

pre-main-sequence star that was eclipsed by the likely free-floating substellar object J1407b in April–June 2007. With an age around 20 million years, the...

Carpenter, J. M.; Bowler, B. P. (2017-07-01). "ALMA Observations of the Young Substellar Binary System 2M1207". The Astronomical Journal. 154 (1): 24. arXiv:1706...

initially in balance between self-gravity, which tends to compress the object, and both gas pressure and magnetic pressure, which tend to inflate it....

Scorpius–Centaurus association. In 2023, HIP 81208 C was found to be orbited by a substellar object, which is at the border between being a massive exoplanet and a low-mass...

exceptionally red substellar object, likely located in the Beta Pictoris moving group. CWISE J0506+0738 was first noticed as a high proper motion object in WISE...

astrophysics, a gravastar (a blend word of "gravitational vacuum star") is an object hypothesized in a 2001 paper by Pawel O. Mazur and Emil Mottola as an alternative...

"Discovery of a close substellar companion to the hot subdwarf star HD 149382 — the decisive influence of substellar objects on late stellar evolution"...

Cha 110913−773444 (sometimes abbreviated Cha 110913) is an astronomical object surrounded by what appears to be a protoplanetary disk. It lies at a distance...

planets. Notable neutron stars, black holes, and other exotic stellar objects/remnants. Note that these lists are currently unfinished, and there may...

"Distances, Luminosities, and Temperatures of the Coldest Known Substellar Objects". Science. 341 (6153): 1492–1495. arXiv:1309.1422. Bibcode:2013Sci...

The magnetospheric eternally collapsing object (MECO) is an alternative model for black holes initially proposed by Indian scientist Abhas Mitra in 1998...

Chabrier, G.; Baraffe, I. (2000). "Theory of low-Mass stars and substellar objects". Annual Review of Astronomy and Astrophysics. 38: 337–377. arXiv:astro-ph/0006383...