20 November 2021
⇐20211119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211121⇒

NOAA
2 Active Regions
12896
12897

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 W32S61
(247",-867") 		E39-W52
(91) 		2.7 -0.7 -7.3e20
2 W23S28
(333",-492") 		W04-W31
(27) 		2.5 -2.2 -1.1e21
3 E33N57
(-292",794") 		E65-E08
(57) 		1.5 0.4 1.7e20
4 E48S15
(-698",-272") 		E56-E41
(15) 		0.4 -1.3 -1.2e20
5 W24S00
(401",-36") 		W20-W29
(9) 		0.2 0.9 2.4e19
6 W36S07
(563",-154") 		W34-W38
(4) 		0.1 1.9 2.9e19
7 W10N63
(80",849") 		W04-W16
(12) 		0.1 1.7 4.1e19

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 20-Nov-2021 20:30 UT .