9 August 2018
⇐20180808 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180810⇒

NOAA
1 Active Region
12717

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 E10N70
(-57",846") 		E76-W77
(153) 		3.9 0.9 5.3e21
2 W20S06
(319",-201") 		22
(5.4e04) 		-1.4 5.4 2.9e21
3 E53N42
(-559",585") 		E63-E50
(13) 		0.5 0.9 5.1e20
4 E33N03
(-510",-33") 		E39-E26
(13) 		0.2 1.1 8.2e19
5 W21N47
(232",617") 		W16-W28
(12) 		0.2 -1.1 -8.6e19
6 W19N37
(243",493") 		W15-W23
(8) 		0.1 -0.7 -3.0e19
7 W17S71
(94",-921") 		W09-W25
(16) 		0.1 -0.7 -2.6e20
8 W38S19
(553",-383") 		W37-W40
(3) 		0.0 -0.9 -2.2e19

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 9-Aug-2018 23:10 UT .