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2MASS J22282889−4310262 — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/2MASS_J22282889%E2%88%924310262
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-06T12:15:14.283Z
SHA-256 of the archived text: 27d031e7543ba715d59f293aa21a48f8edd47717b418580ed0e3e696bd18aaa8
Stable URL of this page: https://metraipolis.com/documento/dc_7dbd860abb8d

How to cite

2MASS J22282889−4310262 — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/2MASS_J22282889%E2%88%924310262 (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_7dbd860abb8d (Metraipolis archive dc_7dbd860abb8d, sha256 27d031e7543ba715d59f293aa21a48f8edd47717b418580ed0e3e696bd18aaa8)

BibTeX

@misc{dc7dbd860abb8d,
  title = {2MASS J22282889−4310262 — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/2MASS_J22282889%E2%88%924310262},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_7dbd860abb8d; sha256 27d031e7543ba715d59f293aa21a48f8edd47717b418580ed0e3e696bd18aaa8},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/2MASS_J22282889%E2%88%924310262. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

2MASS J22282889−4310262 is a brown dwarf discovered by the Hubble Space Telescope and the Spitzer Space Telescope in 2013. Using Hubble and Spitzer, NASA astronomers were able to develop the most detailed 'weather map' for brown dwarfs, utilizing different wavelengths of infrared light to show changing light patterns and different layers of material in the windstorms (the layers were generated because water and methane vapors are visible at different infrared wavelengths). This observation was the first time that researchers were able to probe such variability at different altitudes in a brown dwarf. In the outer layers of its atmosphere, gases condense into raindrop-like particles made up of sand and iron which fall into the interior. Researchers also determined that the object's temperature ranges from 1,100 to 1,300 degrees Fahrenheit (600 to 700 degrees Celsius). The brown dwarf is rotating extremely rapidly, with 1.41 hours rotation period being the smallest reliably measured rotation period of the brown dwarf as of 2021. In 2026, a team of researchers used archival data by the Very Large Array to detect radio emission from the brown dwarf. T-dwarfs with detected radio emissions are rare and are caused by auroral processes. The radio emission at 2MASS 2228-4310 showed highly polarised bursts at intervals of around 47 and 58 minutes, or around half the rotation period. This emission comes from electron cyclotron maser emission and the magnetic field strength is constrained to around B ≥ 1.4 kG.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «2MASS J22282889−4310262» — https://en.wikipedia.org/wiki/2MASS_J22282889%E2%88%924310262
Wikidata Q17487951: «star in the constellation Grus» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q17487951
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/2MASS_J22282889%E2%88%924310262?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1364012025, consultata il 2026-11-06T12:13:06.171Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 3d82f558e1c10c919eecc6555941d30b5215892982a5e1f67ae4e4a4d90ebfca