Talk:Triangulum: Difference between revisions

Astronomy: Constellations Start‑class Mid‑importance

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Why is beta brighter than alpha? Nik42 06:05, 17 September 2006 (UTC)[reply]

Bayer designations often don't follow the alphabetical/decreasing brightness rule. The brightness measurements were made by eye which explains some of the discrepancies. In addition, they often follow some asterism (like is the case in Ursa Major and Sagittarius) and therefore the alpha star may be far from being the brightest star.--JyriL ^talk 00:14, 31 December 2006 (UTC)[reply]

"Beta" was not brighter than "Alpha" in Bayer's Uranometria (1603). Bayer wrote that three stars ― Alpha, Beta, and Gamma Trianguli were same class (not magnitude) "Quartae Diff[erentiae]" in the star list of the constellation "TRIANGVRVM"[1]. Alpha Trianguli is prior to Beta Trianguli on their position within the constellation Triangulum. It is same case of the Plough in Ursa Major and "Castor and Pollux" in Gemini, not Sagittarius.--Bay Flam 08:24, 8 May 2007 (UTC)[reply]

This name should be changed to Triangulum Borale, the Northern Triangle because there is the constellation Triangulum Australe, the Southern Triangle like Corona (Corona Borealis and Corona Australis). Cosmium 22:26, 22 January 2007 (UTC)[reply]

(1) Give a source for the claim. (2) If it is changed, it will be in future. For now, the name of the constellation is Triangulum.--JyriL ^talk 00:14, 31 December 2006 (UTC)[reply]

Nope, the "official" name is Triangulum, not Triangulum Borale. I've never ever heard of "Triangulum Borale". Said: Rursus 20:08, 4 May 2007 (UTC)[reply]

Surely Triangulum is official name of this constellation. "Triangulus Septentrionalis" (sic), the Northern Triangle with TRIANGVRVM found in the star list of Bayer's Uranometria. Please see above.--Bay Flam 08:24, 8 May 2007 (UTC)[reply]