File:Snapshots of -One Location- on the Sun Over Five Years -Hinode XRT-.webm

From Wikimedia Commons, the free media repository
Jump to: navigation, search
Original file(WebM audio/video file, VP8/Vorbis, length 50 s, 720 × 720 pixels, 714 kbps overall)



Today's movie attempts to follow a fixed location on the sun as it comes back around after each rotation period. Each frame advances time by one Carrington rotation period, around 27.3 days. Following one spot on the sun is a tricky endeavor because the sun is not a solid body and is therefore subject to differential rotation, meaning that different latitudes have different rotation rates. The polar regions of the sun rotate fully about once every 34 days, while material at the equator takes only about 25 days. Richard Carrington used low latitude sunspots to determine the rotation period of the sun and came up with a sidereal period of 25.38 days, which, because the Earth is orbiting the Sun, appears to us as 27.28 days. In this movie, several active regions can be observed to appear, linger for a rotation or two, and then dissipate. But this perspective is perhaps even more interesting for illuminating the dynamic nature of coronal holes, the dark regions of cooler and lower-density plasma, which can be seen here morphing and migrating throughout the corona.

Visit us at and view the original post at

Questions and comments welcome at xrtpow "at" gmail "dot" com

Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in co-operation with ESA and the NSC (Norway).



w:en:Creative Commons
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).

This file, which was originally posted to, was reviewed on by the administrator or reviewer McZusatz, who confirmed that it was available there under the stated license on that date.

File history

Click on a date/time to view the file as it appeared at that time.

current14:24, 23 June 201350 s, 720 × 720 (4.25 MB)YtUPt (talk | contribs)Imported from
  • You cannot overwrite this file.

The following page links to this file:

File usage on other wikis

The following other wikis use this file:

Transcode status

Update transcode status
FormatBitrateDownloadStatusEncode time
WebM 720P355 kbps
Download file
Completed 14:25, 23 June 201343 s
WebM 480P930 kbps
Download file
Completed 14:25, 23 June 201343 s
WebM 360P474 kbps
Download file
Completed 14:25, 23 June 201335 s
WebM 240P242 kbps
Download file
Completed 23:44, 24 February 201721 s
WebM 160P122 kbps
Download file
Completed 08:35, 27 February 201717 s
Ogg 720P497 kbps
Download file
Completed 05:24, 7 April 201719 s
Ogg 480P718 kbps
Download file
Completed 09:49, 28 March 201715 s
Ogg 360P476 kbps
Download file
Completed 23:15, 29 March 201711 s
Ogg 240P269 kbps
Download file
Completed 13:41, 2 March 20177.0 s
Ogg 160P134 kbps
Download file
Completed 06:02, 3 March 20175.0 s