22 August 2018
⇐20180821 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180823⇒

NOAA
2 Active Regions
12719
12718

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 E22N55
(-200",717") 		E81-W20
(101) 		6.1 1.1 4.7e21
2 W41S28
(547",-522") 		W25-W53
(28) 		1.8 -0.5 -7.2e20
3 W16S26
(230",-508") 		W03-W25
(22) 		1.8 -0.3 -2.2e20
4 E07S66
(-49",-907") 		E23-W07
(30) 		0.3 -1.3 -1.3e21
5 W62N03
(835",-3") 		W56-W67
(11) 		0.2 -1.9 -5.8e20
6 E10S41
(-118",-709") 		E13-E05
(8) 		0.2 -0.8 -7.5e19
7 E23S63
(-165",-889") 		E27-E22
(5) 		0.1 -1.3 -6.3e20
8 E15S27
(-222",-528") 		E20-E11
(9) 		0.1 -1.1 -4.9e19
9 E05S37
(-70",-654") 		E08-E01
(7) 		0.1 -1.3 -6.4e19
10 E05S24
(-72",-494") 		E07-E02
(5) 		0.1 -1.3 -2.7e19
11 E44N05
(-660",6") 		E48-E41
(7) 		0.1 -1.0 -2.6e19

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 22-Aug-2018 23:10 UT .