24 March 2021
⇐20210323 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210325⇒

NOAA
3 Active Regions
12811
12812
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 W08S13
(135",-103") 		E18-W22
(40) 		3.9 -1.0 -6.1e20
2 E25N60
(-201",882") 		E46-W25
(71) 		1.3 0.4 2.6e20
3 W29S77
(108",-907") 		E78-W74
(152) 		1.1 -0.9 -5.0e20
4 E34S33
(-447",-446") 		E49-E16
(33) 		0.9 -2.0 -3.7e20
5 E09N10
(-145",271") 		E11-E06
(5) 		0.1 -0.9 -1.2e19
6 W74S54
(537",-759") 		W65-W82
(17) 		0.1 -1.1 -4.6e19

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 24-Mar-2021 20:30 UT .