Talk:Giant Arc

Location of the Giant Arc

Is it possible to include the coordinates of the Giant Arc? (R.A. / Decl.). I want to add the name Giant Arc to my alphabetic list of astronomy-related names of objects in the universe (names of objects in our solar system not included). I want to know in which one of Eugene Delporte's I.A.U.-constellations (or group of constellations) the Giant Arc is located. DannyCaes (talk) 22:13, 26 February 2022 (UTC)

Confusing coordinates...

The R.A. of the Giant Arc's celestial coordinates looks a bit confusing. Is it 12h or 21h? 212h 0m 0s, +37° 0′ 0″ DannyCaes (talk) 19:19, 24 April 2022 (UTC)

@DannyCaes and PianoDan: PDan, you added the sky coordinates a few years ago. I'm not an astronomer, but it appears right ascension can't be higher than 24^h. Were you entering degrees by any chance (212°?), or maybe mistyped the coordinates into the template? Hoof Hearted (talk) 18:00, 6 May 2025 (UTC)

Is the name "Giant Arc" unique? NASA.gov is listing "Giant Arc in Galaxy Cluster IDCS J1426.5+3508", within the constellation Boötes, at 14^h 25^m 59.99^s, 35° 7′ 59.99″. Is this the right object, and a reliable source? Hoof Hearted (talk) 18:38, 6 May 2025 (UTC)

Look like the "sky" coordinate template defaults to using hours for right ascencion, and the original article used degrees, and I didn't notice. :) This is indeed the same object - I'll add a link to the Xarchiv original paper to the article and update the coordinates.

Also worth noting is that for anything this big, coordinates are obvviously an approximate location of the centroid, rather than anything more precise. Thanks!

PianoDan (talk) 14:36, 7 May 2025 (UTC)

Contents?

Which superclusters are part of this Giant Arc? 2601:441:5000:ADF0:784B:6F72:B055:1CB3 (talk) 18:17, 24 July 2023 (UTC)

Wiki Education assignment: ASTR 512

This article was the subject of a Wiki Education Foundation–supported course assignment, between 31 March 2025 and 6 June 2025. Further details are available on the course page. Student editor(s): Larkpie (article contribs).

— Assignment last updated by Gatewayev7000 (talk) 17:48, 12 May 2025 (UTC)