4 December 2018
⇐20181203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181205⇒

NOAA
0 Active Regions

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 E19S22
(-300",-377") 		E42-W20
(62) 		23.2 -0.6 -3.9e21
2 E17N66
(-117",886") 		E62-W52
(114) 		2.0 1.1 4.0e21
3 W39S23
(566",-390") 		W36-W44
(8) 		0.1 -0.7 -3.3e19
4 W28S17
(434",-297") 		W24-W31
(7) 		0.1 -1.1 -3.2e19
5 W47S15
(684",-258") 		W44-W50
(6) 		0.1 -0.9 -4.5e19
6 W33S10
(524",-172") 		W32-W35
(3) 		0.0 -0.6 -8.8e18

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 4-Dec-2018 20:30 UT .