Metraipolis › archive › dc_588dfd0072ea

7 Ceti — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/7_Ceti
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-06T20:44:57.406Z
SHA-256 of the archived text: dfba3e28143a58604cf00ef36949b4b76f6f4660ee7d0c660c7c78a112cc7ee9
Stable URL of this page: https://metraipolis.com/documento/dc_588dfd0072ea

How to cite

7 Ceti — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/7_Ceti (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_588dfd0072ea (Metraipolis archive dc_588dfd0072ea, sha256 dfba3e28143a58604cf00ef36949b4b76f6f4660ee7d0c660c7c78a112cc7ee9)

BibTeX

@misc{dc588dfd0072ea,
  title = {7 Ceti — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/7_Ceti},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_588dfd0072ea; sha256 dfba3e28143a58604cf00ef36949b4b76f6f4660ee7d0c660c7c78a112cc7ee9},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/7_Ceti. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

7 Ceti is a single, variable star in the equatorial constellation of Cetus. It has the variable star designation AE Ceti. The star is visible to the naked eye with an apparent visual magnitude varying around 4.3 to 4.4. Based upon an annual parallax shift of only 7.3 mas, it is located roughly 450 light years away. It is moving closer to the Sun with a heliocentric radial velocity of −23 km/s. Eggen (1965) listed it as a probable member of the Wolf 630 group of co-moving stars. This is an aging red giant star with a stellar classification of M1 III, currently on the asymptotic giant branch. In 1959, Alan William James Cousins announced the detection of variability in the brightness of 7 Ceti. It was given its variable star designation in 1973. Samus et al. (2017) has it classed as a slow irregular variable of type LB:, and ranges in magnitude from 4.26 down to 4.46. Tabur et al. (2009) list it as a semiregular variable with four known periods ranging in frequency from 19.2 to 41.7 days. The stellar atmosphere of 7 Ceti has expanded to an estimated 69 times the Sun's radius. It is radiating around 1,011 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,909 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 «7 Ceti» — https://en.wikipedia.org/wiki/7_Ceti
Wikidata Q3599856: «stella nella costellazione della Balena» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q3599856
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/7_Ceti?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 1374584549, consultata il 2026-11-06T20:38:17.765Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: aa4e96f555167cb5328aabc774b4e49f34d35666aaea3239d0c54d3f079eeb6b