26 December 2020
⇐20201225 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201227⇒

NOAA
3 Active Regions
12794
12795
12793

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 W13S16
(219",-237") 		W07-W19
(12) 		0.8 -3.6 -4.7e20
2 W25S73
(124",-921") 		E52-W71
(123) 		0.8 -0.7 -2.6e20
3 W37N68
(217",918") 		70
(4.0e04) 		1.0 3.4 1.3e21
4 E28N75
(-119",951") 		E37-E14
(23) 		0.1 0.4 2.1e19
5 E11N27
(-160",481") 		E12-E09
(3) 		0.0 -1.3 -9.3e18

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 26-Dec-2020 20:30 UT .