12 October 2021
⇐20211011 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211013⇒

NOAA
3 Active Regions
12882
12883
12884

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 W20S09
(327",-246") 		E01-W35
(36) 		3.9 -0.1 -3.4e19
2 E12N12
(-196",95") 		E24-W14
(38) 		3.8 0.1 8.2e19
3 E42N70
(-219",873") 		E69-W71
(140) 		2.1 1.0 9.0e20
4 E36S06
(-569",-178") 		E49-E23
(26) 		1.7 0.1 3.5e19
5 E41N30
(-553",409") 		E56-E18
(38) 		1.4 2.1 6.2e20
6 E55S28
(-694",-507") 		E70-E39
(31) 		1.2 -1.5 -5.9e20
7 W39S05
(603",-166") 		W34-W47
(13) 		0.3 -0.9 -4.7e19
8 E01N34
(-19",454") 		E03-W01
(4) 		0.0 -1.9 -1.4e19
9 E05N43
(-64",576") 		E07-E02
(5) 		0.0 -2.5 -2.0e19

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 12-Oct-2021 23:30 UT .