23 November 2020
⇐20201122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201124⇒

NOAA
4 Active Regions
12783
12784
12785
12782

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 W20N59
(171",821") 		E68-W70
(138) 		5.2 1.3 2.0e21
2 W10N09
(172",126") 		E03-W21
(24) 		3.6 0.1 6.9e19
3 E23S05
(-375",-118") 		E36-E00
(36) 		3.0 0.3 1.3e20
4 W54N38
(621",589") 		W37-W63
(26) 		1.1 0.6 2.1e20
5 W40S69
(226",-914") 		W20-W54
(34) 		0.3 -0.7 -1.3e20
6 W24N29
(344",444") 		W18-W27
(9) 		0.2 2.9 1.0e20
7 E38N05
(-591",58") 		E40-E35
(5) 		0.1 -0.5 -6.5e18
8 E11S09
(-191",-173") 		E13-E09
(4) 		0.0 -1.2 -8.2e18

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 23-Nov-2020 20:30 UT .