22 October 2018
⇐20181021 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181023⇒

NOAA
2 Active Regions
12724
12725

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 W26S12
(412",-279") 		E09-W52
(61) 		11.7 -0.3 -1.1e21
2 W26N68
(156",861") 		E80-W67
(147) 		3.1 1.1 5.7e21
3 E05N16
(-87",186") 		E11-W05
(16) 		1.6 0.1 2.9e19
4 W31S68
(181",-921") 		E10-W47
(57) 		0.3 -1.1 -2.0e21
5 E18S71
(-97",-936") 		E26-E06
(20) 		0.1 -0.2 -1.3e20
6 E28S18
(-429",-378") 		E31-E25
(6) 		0.1 -1.0 -2.0e19
7 E38N09
(-592",86") 		E40-E37
(3) 		0.0 -0.8 -1.1e19

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 22-Oct-2018 23:10 UT .