18 December 2018
⇐20181217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181219⇒

NOAA
2 Active Regions
12730
12731

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 E15N65
(-111",891") 		E69-W70
(139) 		2.3 0.8 3.6e21
2 W32S32
(446",-496") 		W06-W46
(40) 		2.0 -0.5 -5.2e20
3 E22S01
(-365",2") 		E31-E09
(22) 		1.4 -1.1 -3.7e20
4 W45S67
(266",-895") 		E44-W67
(111) 		1.4 -1.3 -6.8e21
5 E40S22
(-588",-345") 		E44-E36
(8) 		0.1 -0.4 -3.2e19
6 E35N13
(-546",241") 		E38-E32
(6) 		0.1 -0.8 -3.3e19

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 18-Dec-2018 20:30 UT .