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Liste des Naines brunes

Plus à propos Naines brunes

	Mass	Distance
2MASSI J0423-0414 2MASSI J0423485-041403, SDSS J0423−0414AB	L6.5	0.01 M☉	46.5 ly
2MASSI J0423-0414 B	T2	-	46.5 ly
WISEA J0335+4310 WISEA J033515.07+431044.7	T9	-	46.6 ly
2MASS J1448+1031 2MASS J14482563+1031590	L5.5	-	46.8 ly
WISE 0223-2932 EQ J0223-2932	T7.5	-	47 ly
WISE 0500-1223 EQ J0500-1223	T8	-	47 ly
WISE 1812+2721	T8.5:	-	47 ly
CWISEP J1935-1546 CWISEP J193518.59-154620.3	Y1	0.02 M☉	47.1 ly
CWISEP J1935-1546 B		0.01 M☉	47.1 ly
WISEP J1258-4412 WISEP J125804.91-441232.4, VHS J125804.89-441232.4	T6	-	47.1 ly
2MASSI J2325+4251 2MASSI J2325453+425148	L8	-	47.1 ly
WISE 0744+5628	T8	-	47.3 ly
2MASS J16150413+1340079 SDSS J161504.26+134005.6, SIMP J1615041+134007, TIC 105772357, WISE J161504.36+134004.2	T6	-	47.5 ly
UCAC4 638-030976		-	47.6 ly
2MASS J1043+1213 2MASS J10433508+1213149	L9	-	47.6 ly
2MASS J1807+5015 2MASS J18071593+5015316	L1	-	47.6 ly
2MASS J1346-0031 2MASS J13464634-0031501	T6	-	47.8 ly
2MASSW J1036-3441 2MASSW J1036530-344138	L6	-	48 ly
UCAC4 563-099325		-	48.3 ly
AB Doradus C		0.09 M☉	48.4 ly

Naines brunes nouvelles

Patchy water clouds and chemical changes observed on brown dwarf WISE 0855

17. 10. 2026

Étoiles | 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

14. 10. 2026

Étoiles | 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

9. 10. 2026

Étoiles | 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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Research in Naines brunes

Parcourez les dernières études scientifiques sur les étoiles et les exoplanètes de notre galaxie. Découvrez les dernières recherches en astrophysique et en astronomie stellaire.

Les recherches en cours

	WISE 0855-0714 7.3 ly			Water Cloud and Chemical Modulations in the Coldest Brown Dwarf 17. 10. 2026
	WASP 94 687 ly			A New Method for Constraining 3D Exoplanet Atmospheres: Application to WASP-94A b's Panchromatic Spectrum 16. 10. 2026
	KELT-2 439 ly			Emission spectroscopy of KELT-2A b with Gemini-North/IGRINS-2: hints of a stellar C/O ratio and sub-stellar metallicity 15. 10. 2026
	TOI-2257 189 ly			The Limits of Tidal Circularization and Atmospheric Escape for Mini-Neptunes and Super-Earths: The Case of TOI-2257 b 15. 10. 2026
	KELT-18 1032 ly			High-resolution transmission spectroscopy of KELT-18b Metastable helium detection at 1083 nm 14. 10. 2026

Publications plus anciennes

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.

StellarGuide: Étoiles

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.

More about Étoiles

Random terms

Position de la étoile Luminosité Température des étoiles Masse stellaire Taille de l´étoile L´âge des étoiles