15 October 2019
⇐20191014 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191016⇒

NOAA
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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 E19S43
(-225",-726") 		E33-W55
(88) 		6.1 -0.6 -9.4e20
2 W14N68
(88",850") 		E87-W51
(138) 		3.5 1.3 1.6e21
3 W18N18
(281",205") 		W03-W28
(25) 		2.6 0.1 3.5e19
4 W10S18
(163",-394") 		E05-W19
(24) 		2.0 -0.0 -9.8e18
5 W13S51
(141",-804") 		W07-W22
(15) 		0.2 -0.3 -1.4e19
6 W24N03
(391",-44") 		W21-W27
(6) 		0.1 -1.7 -3.6e19
7 W45S08
(676",-199") 		W42-W48
(6) 		0.1 1.2 2.4e19
8 E26S68
(-156",-923") 		E41-E22
(19) 		0.1 -1.3 -4.4e19
9 W26S06
(427",-184") 		W24-W28
(4) 		0.0 -2.3 -1.5e19

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 15-Oct-2019 23:40 UT .