21 November 2018
⇐20181120 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181122⇒

NOAA
1 Active Region
12727

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 E03N54
(-25",769") 		E68-W74
(142) 		5.4 0.6 2.6e21
2 W29S24
(426",-418") 		W02-W47
(45) 		3.4 -0.2 -3.1e20
3 E27S10
(-439",-204") 		E35-E17
(18) 		1.5 -1.3 -6.2e20
4 W51S35
(623",-572") 		W45-W57
(12) 		0.3 -1.2 -3.8e20
5 E38S71
(-196",-925") 		E54-E12
(42) 		0.3 -0.9 -1.4e21
6 W26S73
(124",-937") 		E13-W54
(67) 		0.3 -0.9 -1.4e21
7 E02S16
(-36",-301") 		E05-W02
(7) 		0.1 -1.0 -1.8e19

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 21-Nov-2018 20:30 UT .