12 February 2021
⇐20210211 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210213⇒

NOAA
0 Active Regions

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 E17N30
(-244",579") 		E34-W17
(51) 		8.7 0.5 8.2e20
2 W08S58
(75",-765") 		E82-W29
(111) 		7.6 -1.0 -1.8e21
3 W26S21
(397",-258") 		W21-W31
(10) 		0.2 -1.9 -6.8e19
4 W32N68
(190",933") 		W19-W41
(22) 		0.1 0.9 8.4e19
5 W10S01
(171",101") 		W07-W13
(6) 		0.1 -1.1 -1.9e19
6 E09S04
(-153",40") 		E11-E07
(4) 		0.1 -1.1 -1.6e19
7 W24N12
(382",308") 		W21-W25
(4) 		0.1 -1.4 -1.9e19
8 W37N04
(584",153") 		W34-W39
(5) 		0.1 2.3 2.5e19
9 W11N44
(133",756") 		W08-W14
(6) 		0.0 1.3 1.4e19
10 W48N14
(702",304") 		W45-W51
(6) 		0.0 -1.4 -1.4e19

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-Feb-2021 20:30 UT .