22 April 2020
⇐20200421 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200423⇒

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 E12N04
(-191",151") 		E44-W20
(64) 		5.7 0.1 1.6e20
2 W08S67
(52",-842") 		E71-W63
(134) 		4.0 -1.3 -6.9e21
3 W14S19
(214",-231") 		E03-W24
(27) 		2.4 -0.1 -6.9e19
4 W34S22
(498",-295") 		W25-W45
(20) 		0.7 -0.7 -1.9e20
5 E23S28
(-333",-378") 		E28-E19
(9) 		0.1 -1.1 -2.9e19
6 W32N11
(495",249") 		W30-W35
(5) 		0.0 -1.0 -1.8e19

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-Apr-2020 19:30 UT .