10 August 2021
⇐20210809 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210811⇒

NOAA
3 Active Regions
12851
12852
12853

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 E00N58
(-4",742") 		E55-W89
(144) 		7.1 0.6 1.0e21
2 W29N15
(439",148") 		W13-W46
(33) 		2.1 0.0 1.6e19
3 E08S57
(-69",-844") 		76
(6.5e04) 		-0.9 3.5 2.3e21
4 W23S42
(276",-705") 		W12-W32
(20) 		0.7 -1.1 -2.0e20
5 W05S34
(64",-619") 		W00-W07
(7) 		0.1 -0.8 -1.6e19

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 10-Aug-2021 11:30 UT .