8 April 2018
⇐20180407 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180409⇒

NOAA
1 Active Region
12703

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 W27N02
(435",130") 		W10-W42
(32) 		2.3 -2.7 -1.8e33
2 E33N11
(-509",267") 		E50-E13
(37) 		1.9 -0.3 -2.3e32
3 W18S73
(87",-882") 		E77-W85
(162) 		1.6 -1.4 -4.5e33
4 W01N09
(24",250") 		E08-W10
(18) 		1.4 -1.7 -5.1e32

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 8-Apr-2018 23:30 UT .