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11 Cephei — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/11_Cephei
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T17:38:02.275Z
SHA-256 of the archived text: 5e68b9537cc5f429ff645b9307f215755a1b0de59674500c79cfbb8f30d60d5d
Stable URL of this page: https://metraipolis.com/documento/dc_f822f94dece4

How to cite

11 Cephei — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/11_Cephei (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_f822f94dece4 (Metraipolis archive dc_f822f94dece4, sha256 5e68b9537cc5f429ff645b9307f215755a1b0de59674500c79cfbb8f30d60d5d)

BibTeX

@misc{dcf822f94dece4,
  title = {11 Cephei — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/11_Cephei},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_f822f94dece4; sha256 5e68b9537cc5f429ff645b9307f215755a1b0de59674500c79cfbb8f30d60d5d},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/11_Cephei. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

11 Cephei is a single star in the northern constellation of Cepheus, located 179 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.55. The star has a relatively high proper motion, traversing the celestial sphere at the rate of 0.153 arc seconds per annum. It is moving closer to the Earth with a heliocentric radial velocity of −38 km/s. This is an aging giant star with a stellar classification of K0.5 III, having exhausted the hydrogen at its core and expanded. It is a red clump giant, which means it is currently on the horizontal branch and is generating energy through helium fusion at the core. 11 Cephei is 670 million years old with 2.4 times the mass of the Sun and 11 times the Sun's radius. It is radiating around 95 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 5,446 K.

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 «11 Cephei» — https://en.wikipedia.org/wiki/11_Cephei
Wikidata Q4547757 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q4547757
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/11_Cephei?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 1338657202, consultata il 2026-10-07T17:08:11.601Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 8300b40084a0a4798478b1e3b93c0f16d63bf3bbb7c63f510d0aea12821d62fc