2 September 2019
⇐20190901 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190903⇒

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 E22S25
(-325",-507") 		E40-W10
(50) 		10.3 -0.5 -1.1e21
2 E01N69
(-9",837") 		E80-W66
(146) 		4.4 1.3 1.8e21
3 W34S18
(511",-385") 		W31-W38
(7) 		0.1 -0.7 -1.4e19
4 E33S69
(-189",-915") 		E39-E17
(22) 		0.1 -1.1 -7.6e19
5 E11S66
(-73",-911") 		E15-E08
(7) 		0.1 -0.3 -1.2e19
6 W27S57
(238",-849") 		W24-W30
(6) 		0.1 -0.7 -1.8e19
7 W29S19
(436",-403") 		W27-W31
(4) 		0.1 -2.4 -2.4e19
8 W04N07
(58",-1") 		W02-W05
(3) 		0.0 -1.1 -7.7e18
9 W25S03
(399",-164") 		W23-W27
(4) 		0.0 -0.8 -6.3e18

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 2-Sep-2019 23:40 UT .