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Liste des Naines brunes

        
    
Plus à propos Naines brunes
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Etoile 421-440
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Nom de l étoile Mass Distance

2MASS J22092183-2711329
T2.5 - 68.1 ly

2MASS J0501-0010
2MASS J05012406-0010452
L4gamma - 68.3 ly

2MASS J06320891-1009269
- 68.4 ly

2MASSW J1338+4140
2MASSW J1338261+414034
L2.5V - 68.5 ly

2MASS J0320-0446
M8.5 - 68.5 ly

2MASS J0320-0446 B
T5 - 68.5 ly

2MASS J0624+6626
2MASS J06244172+6626309
- 68.5 ly

Gaia EDR3 6029092609878604160
- 68.6 ly

2MASS J0518-2828
2MASS J05185995-2828372
L6 - 68.7 ly

2MASS J0518-2828 B
T4 - 68.7 ly

DENIS J081231.6-244442
L1.5 - 68.7 ly

G 203-50B
L5 - 68.8 ly

Gaia EDR3 4287343286679355136
- 68.8 ly

2MASS J13595510-4034582
L3.1:V - 68.9 ly

Gaia EDR3 5541111516746730752
- 68.9 ly

DENIS J175656.1-480509
L0.0 - 68.9 ly

2MASS J1209-1004
2MASS J12095613-1004008
T2 - 69 ly

2MASS J1209-1004 B
T7.5 - 69 ly

Gaia EDR3 1758387171788682880
- 69 ly

VHS 1256-1257
2MASS J12560215-1257217, TIC 2470992, WISE J125601.96-125723.9
M7.0 D 0.09 M☉ 69 ly
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Naines brunes nouvelles

Patchy water clouds and chemical changes observed on brown dwarf WISE 0855
icon17. 10. 2026
iconÉtoiles | Naines brunes | Atmosphères planétaire
Image: Patchy water clouds and chemical changes observed on brown dwarf WISE 0855
WISE 0855 represents the coldest known brown dwarf, an object too large to be a planet but too small to sustain the nuclear fusion that powers stars. With a temperature of roughly 265 Kelvin, it is cold enough to host complex atmospheric phenomena similar to those seen on gas giant planets in our solar system. Observations reveal that this object is not uniform but features patchy water clouds distributed throughout its atmosphere, which influence its light patterns over time. To study this, ...
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Massive brown dwarf HD 203771 b confirmed in eccentric orbit around orange dwarf
icon14. 10. 2026
iconÉtoiles | Exoplanètes | Naine orange | Naines brune
Image: Massive brown dwarf HD 203771 b confirmed in eccentric orbit around orange dwarf
Massive brown dwarf HD 203771 b confirmed in an eccentric orbit around an orange dwarf star. New mass measurements place the companion at approximately 70 times the mass of Jupiter, revealing insights into how brown dwarfs migrate inward over time....
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Silicate clouds and gaseous silicon monoxide identified in three early L-dwarf objects
icon9. 10. 2026
iconÉtoiles | Naines brunes | Atmosphères planétaire
Image: Silicate clouds and gaseous silicon monoxide identified in three early L-dwarf objects
Analysis of three early L-dwarfs, HD 89744 B, Gliese 1048 B, and LSPM J0632+5053 B, reveals gaseous silicon monoxide and silicate clouds in their atmospheres. JWST data confirms these mineral clouds form as silicon gas condenses, mimicking processes in giant planets....
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study iconResearch in Naines brunes

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Frequently Asked Questions about nearby stars

What is the nearest star?

Nearest star is Proxima Centauri, located approximately 4.24 light-years (1.30 parsecs) from the Sun. It is part of the Alpha Centauri star system, which also includes Alpha Centauri A and Alpha Centauri B.

What are the nearest stars to Earth?

Nearest stars to Earth include the Alpha Centauri system (Alpha Centauri A, Alpha Centauri B, and Proxima Centauri), Barnard's Star, and Wolf 359. There are also brown dwarfs Luhman 16 and WISE 0855−0714.

What is the solar neighborhood?

Solar neighborhood (also Local Interstellar Cloud) is the region of interstellar space that surrounds the Sun with diameter about 15 light years. Stellar Catalog database includes all stars contained within this region.

How do astronomers measure distances to stars?

Astronomers use methods like parallax, standard candles, and redshift to measure distances to stars. Parallax is especially useful for nearby stars in our solar neighborhood, while other techniques help map the universe beyond.

Are there any exoplanets orbiting the nearest stars?

Yes, several exoplanets have been discovered orbiting the nearest stars. For example, Proxima Centauri has an exoplanet called Proxima Centauri b, which is located in the star's habitable zone and is the closest known exoplanet to Earth.

Why are the nearest stars important for astronomy and physics?

The nearest stars provide valuable laboratories for studying stellar evolution, space environments, and the fundamental physics of stars. Observing these stars helps astronomers understand the structure of our galaxy and the broader universe.
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exoplanet iconStellarGuide: Étoiles

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Étoiles
Les étoiles sont d’immenses sphères de gaz chaud qui brillent en produisant de l’énergie grâce à la fusion nucléaire dans leur noyau. La plupart des étoiles sont composées principalement d’hydrogène et d’hélium. Au centre d’une étoile, la pression et la température élevées provoquent la fusion des atomes d’hydrogène en hélium, libérant ainsi une énorme quantité d’énergie sous forme de lumière et de chaleur.
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