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27 Piscium — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/27_Piscium
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-06T11:58:01.823Z
SHA-256 of the archived text: a9b39f5a5a197fa18eb133b5785cc7324f8d8d0a35314569496387981d41bf19
Stable URL of this page: https://metraipolis.com/documento/dc_5797ff89acfb

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27 Piscium — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/27_Piscium (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_5797ff89acfb (Metraipolis archive dc_5797ff89acfb, sha256 a9b39f5a5a197fa18eb133b5785cc7324f8d8d0a35314569496387981d41bf19)

BibTeX

@misc{dc5797ff89acfb,
  title = {27 Piscium — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/27_Piscium},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_5797ff89acfb; sha256 a9b39f5a5a197fa18eb133b5785cc7324f8d8d0a35314569496387981d41bf19},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/27_Piscium. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

27 Piscium is a binary star system in the zodiac constellation of Pisces. It is visible to the naked eye with an apparent visual magnitude of 4.88. Based upon an annual parallax shift of 13.91±0.28 mas, it is located about 234 light years away. The system is positioned near the ecliptic and so is subject to occultation by the Moon. This star was found to be a double by American astronomer S. W. Burnham. By 2002, sufficient position data had been gathered that orbital motion could be demonstrated, and preliminary elements were determined. The system has an orbital period of 695 years and an eccentricity of 0.766. However, the orbital elements do not fully explain the radial velocity variations, which may indicate there is a brown dwarf companion. This candidate object would have a mass of at least 73 MJ and is orbiting with a semimajor axis of around 4 AU. At the age of around 710 million years, the primary, component A, is a first ascent giant star on the red giant branch with a stellar classification of G8 III, which means it is generating energy through hydrogen fusion along a shell surrounding an inert helium core. It has 2.4 times the mass of the Sun and has expanded to 10 times the Sun's radius. The star is radiating about 56 times the Sun's luminosity from its photosphere at an effective temperature of 5,014 K. In 2012, the magnitude 8.9 companion, component B, was at an angular separation of 0.80 arcseconds along a position angle of 325°.

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 «27 Piscium» — https://en.wikipedia.org/wiki/27_Piscium
Wikidata Q4632558: «stella nella costellazione dei Pesci» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q4632558
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/27_Piscium?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 1374875609, consultata il 2026-11-06T11:54:08.388Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 673296a785d68b19108e32cd5b0c09ca2c2b2e8a97b12f16d372a90983ecfca8