25 April 2020
⇐20200424 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200426⇒

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 E05N01
(-88",89") 		E35-W32
(67) 		10.8 0.0 7.8e19
2 W11S61
(85",-793") 		E70-W66
(136) 		5.3 -0.7 -3.7e21
3 W30S21
(445",-271") 		W26-W32
(6) 		0.1 -1.1 -2.5e19
4 E35S22
(-513",-300") 		E37-E33
(4) 		0.0 -1.8 -2.7e19

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 25-Apr-2020 19:30 UT .