13 April 2018
⇐20180412 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180414⇒

NOAA
1 Active Region
12704

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 E40S20
(-573",-264") 		E63-E06
(57) 		7.5 -0.3 -9.9e32
2 W10S78
(34",-912") 		E70-W51
(121) 		0.5 -1.4 -2.6e33
3 W35N19
(525",379") 		W31-W41
(10) 		0.1 -1.7 -8.1e31

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 13-Apr-2018 23:30 UT .