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15 Orionis — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/15_Orionis
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-08T02:47:23.976Z
SHA-256 of the archived text: 78cec9646cea4603c4f8ab237aed3b1bc8aee52cae1959af40db711aebefff69
Stable URL of this page: https://metraipolis.com/documento/dc_e2767ea35ee6

How to cite

15 Orionis — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/15_Orionis (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_e2767ea35ee6 (Metraipolis archive dc_e2767ea35ee6, sha256 78cec9646cea4603c4f8ab237aed3b1bc8aee52cae1959af40db711aebefff69)

BibTeX

@misc{dce2767ea35ee6,
  title = {15 Orionis — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/15_Orionis},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_e2767ea35ee6; sha256 78cec9646cea4603c4f8ab237aed3b1bc8aee52cae1959af40db711aebefff69},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/15_Orionis. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

15 Orionis is a suspected astrometric binary star system in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.82. The system is approximately 340 light years away from the Sun based on parallax. It is moving further from the Earth with a heliocentric radial velocity of +29 km/s, having come to within 69 light-years some three million years ago. The primary component is an early F-type subgiant star with a stellar classification of F2 IV, a star that has exhausted the hydrogen at its core and has begun to evolve into a giant. It has 3.42 times the mass of the Sun and 5.9 times the Sun's radius. The star still has a relatively high rotation rate, showing a projected rotational velocity of 60 km/s. It is radiating 300 times the luminosity of the Sun from its expanding photosphere at an effective temperature of 7,161 K. It has one suspected companion, component B, at a separation of 0.3".

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 «15 Orionis» — https://en.wikipedia.org/wiki/15_Orionis
Wikidata Q6675: «stella della costellazione di Orione» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q6675
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/15_Orionis?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 1374766413, consultata il 2026-10-08T02:10:04.296Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 24269c898f918c5fd9d040a646280dc5ac3bfa84533f178ddea9d950556ec8a5