16 May 2018
⇐20180515 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180517⇒

NOAA
1 Active Region
12709

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 E12S27
(-181",-396") 		E23-W05
(28) 		3.0 -0.2 -1.3e32
2 E36N30
(-490",503") 		E47-E25
(22) 		2.0 0.8 9.4e32
3 E18S70
(-103",-877") 		E76-W57
(133) 		1.8 -1.4 -5.8e33
4 E28N52
(-277",771") 		E38-W02
(40) 		1.8 0.4 7.8e32
5 W39S13
(578",-186") 		W30-W47
(17) 		1.5 -0.4 -2.6e32
6 W30N68
(173",894") 		E01-W60
(61) 		0.6 1.1 2.9e33
7 W08N21
(119",378") 		W02-W12
(10) 		0.4 -1.0 -1.0e32
8 E23S42
(-274",-606") 		E27-E18
(9) 		0.1 -1.1 -5.3e31
9 E34S19
(-501",-276") 		E36-E31
(5) 		0.0 -0.8 -1.5e31

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 16-May-2018 15:30 UT .