11 September 2018
⇐20180910 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180912⇒

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 W15N59
(130",751") 		E92-W39
(131) 		7.6 1.0 5.6e21
2 E42S17
(-608",-363") 		E56-E23
(33) 		2.3 -0.7 -1.0e21
3 E25N07
(-403",-1") 		E36-E13
(23) 		1.7 -1.4 -6.2e20
4 W20S03
(319",-156") 		W12-W28
(16) 		1.5 -0.3 -1.3e20
5 E22S29
(-316",-556") 		E29-E13
(16) 		0.9 -0.7 -2.8e20
6 W55S05
(783",-151") 		W45-W64
(19) 		0.6 1.8 1.1e21
7 E19N44
(-218",582") 		E21-E14
(7) 		0.3 0.9 1.0e20
8 W57N17
(769",219") 		W53-W62
(9) 		0.1 2.6 3.2e20
9 W16N27
(233",325") 		W12-W18
(6) 		0.1 -1.1 -1.9e19

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 11-Sep-2018 23:10 UT .