22 March 2021
⇐20210321 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210323⇒

NOAA
3 Active Regions
12811
12808
12810

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 W53S63
(344",-824") 		E12-W72
(84) 		2.4 -1.1 -1.1e21
2 E17S04
(-288",51") 		E26-E08
(18) 		2.2 -0.6 -2.0e20
3 W22S10
(359",-62") 		E05-W35
(40) 		2.2 0.0 8.5e18
4 W54S31
(670",-431") 		W41-W71
(30) 		1.9 -2.5 -1.3e21
5 E42S25
(-589",-329") 		E68-E23
(45) 		1.3 -1.5 -4.3e20
6 W38N04
(587",167") 		W33-W42
(9) 		0.3 -0.7 -3.8e19
7 E58S74
(-223",-903") 		E66-E57
(9) 		0.1 -2.2 -1.9e20
8 E44S81
(-101",-932") 		E63-E19
(44) 		0.1 -0.7 -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 22-Mar-2021 20:30 UT .