9 September 2018
⇐20180908 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180910⇒

NOAA
1 Active Region
12721

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 E12N59
(-103",748") 		E43-W91
(134) 		8.0 0.9 5.2e21
2 W26S12
(405",-303") 		W04-W37
(33) 		3.2 1.7 1.7e21
3 W19N27
(277",325") 		E01-W31
(32) 		2.3 0.4 2.6e20
4 E18S02
(-296",-153") 		E32-E05
(27) 		2.2 -0.1 -7.6e19
5 E65S07
(-856",-168") 		E76-E58
(18) 		0.2 -1.1 -3.9e20
6 E55N06
(-781",36") 		E59-E52
(7) 		0.0 -1.8 -6.5e19
7 E56S17
(-759",-339") 		E60-E53
(7) 		0.0 -2.0 -9.5e19

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-Sep-2018 23:10 UT .