27 May 2018
⇐20180526 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180528⇒

NOAA
3 Active Regions
12711
12712
12710

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 E07S58
(-61",-791") 		E30-W62
(92) 		5.8 -0.7 -3.8e33
2 W37N55
(324",789") 		E38-W54
(92) 		4.2 0.6 3.8e33
3 E33S17
(-496",-262") 		E55-E06
(49) 		3.9 -1.4 -2.0e33
4 W11S08
(181",-118") 		W08-W14
(6) 		0.1 -1.5 -3.4e31
5 E05S28
(-68",-435") 		E07-E02
(5) 		0.0 1.2 1.4e31

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 27-May-2018 15:30 UT .