7 September 2019
⇐20190906 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190908⇒

NOAA
1 Active Region
12748

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 E05N70
(-30",850") 		E72-W89
(161) 		3.7 1.4 1.8e21
2 W13N16
(208",141") 		W01-W24
(23) 		1.6 0.2 5.5e19
3 E11S15
(-178",-360") 		E20-W03
(23) 		1.5 0.2 6.0e19
4 E18N10
(-289",48") 		E23-E13
(10) 		0.5 -1.0 -8.3e19
5 W40S21
(576",-427") 		W33-W44
(11) 		0.4 -0.5 -4.7e19
6 E24S65
(-166",-901") 		E36-E10
(26) 		0.3 -0.4 -7.0e19
7 W53S15
(738",-318") 		W48-W60
(12) 		0.1 -1.2 -4.7e19
8 W26S51
(268",-801") 		W24-W31
(7) 		0.1 -0.3 -1.3e19
9 W20N19
(312",208") 		W17-W22
(5) 		0.1 0.9 8.9e18
10 W04S17
(66",-387") 		W02-W06
(4) 		0.1 -1.0 -9.8e18
11 W22N44
(261",580") 		W20-W24
(4) 		0.0 0.7 6.3e18
12 E02N27
(-34",318") 		E04-W01
(5) 		0.0 -2.1 -1.3e19

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 7-Sep-2019 23:40 UT .