3 October 2019
⇐20191002 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191004⇒

NOAA
1 Active Region
12749

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 E06N08
(-93",16") 		E37-W44
(81) 		10.6 -0.1 -9.4e19
2 W06N66
(41",829") 		E87-W90
(177) 		4.5 0.9 1.3e21
3 W16S31
(231",-589") 		E09-W27
(36) 		2.3 -0.4 -1.8e20
4 E23N39
(-292",529") 		E34-E15
(19) 		0.5 -0.5 -5.5e19
5 W44S32
(568",-574") 		W36-W51
(15) 		0.4 -0.4 -4.1e19
6 W50S20
(690",-390") 		W43-W57
(14) 		0.3 -0.7 -5.2e19
7 W23S70
(132",-929") 		W06-W39
(33) 		0.1 -1.1 -9.8e19
8 W32S32
(436",-586") 		W31-W36
(5) 		0.0 -2.0 -1.8e19
9 W52S62
(360",-870") 		W47-W56
(9) 		0.0 -2.0 -5.8e19

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 3-Oct-2019 23:40 UT .