8 May 2021
⇐20210507 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210509⇒

NOAA
1 Active Region
12822

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 W16S64
(112",-831") 		E69-W43
(112) 		2.8 -1.2 -1.1e21
2 E23N01
(-372",61") 		E36-W02
(38) 		2.2 -0.3 -1.3e20
3 W33S06
(516",-57") 		W14-W50
(36) 		2.2 -0.0 -2.9e18
4 W24N38
(306",619") 		W12-W37
(25) 		1.1 0.8 1.9e20
5 W16N70
(88",910") 		E36-W29
(65) 		0.6 0.9 3.0e20
6 W44S44
(482",-625") 		W33-W58
(25) 		0.5 -0.4 -5.2e19
7 W30S33
(393",-483") 		W23-W36
(13) 		0.4 -0.9 -6.8e19
8 W08S50
(80",-691") 		W05-W11
(6) 		0.1 -1.7 -3.0e19
9 E25N11
(-394",236") 		E27-E23
(4) 		0.1 -0.7 -8.0e18
10 E29N13
(-450",265") 		E30-E27
(3) 		0.1 0.9 9.6e18
11 W46N10
(672",205") 		W43-W49
(6) 		0.1 -0.5 -5.6e18

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 8-May-2021 23:30 UT .