31 July 2022
⇐20220730 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220801⇒

NOAA
4 Active Regions
13062
13068
13066
13067

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 W27S38
(342",-652") 		E02-W46
(48) 		5.8 -4.2 -5.9e21
2 E22N38
(-281",512") 		E29-E03
(26) 		1.9 0.7 2.7e20
3 E40N72
(-190",870") 		E84-E12
(72) 		0.4 1.2 2.3e20
4 W09N43
(102",580") 		W03-W14
(11) 		0.2 -0.6 -2.2e19
5 E14N55
(-130",721") 		E21-E06
(15) 		0.1 -1.0 -2.6e19

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 31-Jul-2022 23:30 UT .