30 November 2021
⇐20211129 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211201⇒

NOAA
3 Active Regions
12898
12900
12901

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19S09
(-311",-168") 		E37-W15
(52) 		6.9 1.2 1.4e21
2 W26N66
(171",886") 		E36-W61
(97) 		1.5 1.1 6.5e20
3 W39N32
(518",501") 		W33-W47
(14) 		0.3 1.5 1.2e20
4 W22N45
(260",677") 		W18-W26
(8) 		0.2 -0.8 -4.1e19
5 E11N24
(-165",383") 		E13-E08
(5) 		0.1 -1.3 -1.5e19
6 W18S13
(295",-235") 		W16-W20
(4) 		0.1 2.3 2.2e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 30-Nov-2021 20:30 UT .