12 July 2021
⇐20210711 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210713⇒

NOAA
3 Active Regions
12841
12842
12839

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 W22S41
(264",-665") 		E32-W38
(70) 		10.9 -1.2 -2.9e21
2 E16N10
(-261",99") 		E30-W02
(32) 		3.0 -0.1 -5.6e19
3 W13N71
(70",870") 		E78-W60
(138) 		1.6 0.8 5.4e20
4 W46S15
(657",-283") 		W37-W58
(21) 		0.8 -0.8 -1.4e20
5 E17N43
(-198",596") 		E20-E12
(8) 		0.1 -1.0 -2.2e19
6 W43S02
(648",-86") 		W39-W47
(8) 		0.1 -1.0 -2.3e19
7 E02N44
(-22",605") 		E05-W03
(8) 		0.1 -0.7 -1.2e19

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 12-Jul-2021 19:30 UT .