10 May 2021
⇐20210509 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210511⇒

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 W14S01
(237",29") 		E16-W34
(50) 		5.9 -0.3 -2.8e20
2 W37S66
(231",-850") 		E68-W43
(111) 		2.0 -1.1 -9.4e20
3 E53S38
(-598",-565") 		E72-E37
(35) 		1.0 -0.9 -2.6e20
4 E54S53
(-463",-738") 		E75-E48
(27) 		0.4 -0.4 -6.3e19
5 W35N72
(171",914") 		E02-W59
(61) 		0.3 0.9 2.1e20
6 W42S11
(625",-142") 		W40-W44
(4) 		0.1 -0.9 -1.3e19
7 W53S37
(604",-547") 		W51-W57
(6) 		0.1 -1.7 -2.5e19
8 E69S66
(-369",-856") 		E77-E61
(16) 		0.0 -0.8 -2.4e19
9 W46N02
(689",66") 		W45-W48
(3) 		0.0 -2.4 -1.9e19

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-May-2021 19:30 UT .