11 April 2018
⇐20180410 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180412⇒

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 W46N07
(690",191") 		W30-W68
(38) 		1.3 -1.3 -1.0e33
2 W21N13
(335",303") 		W14-W26
(12) 		0.8 -0.7 -1.6e32
3 E37S03
(-578",33") 		E44-E31
(13) 		0.5 1.1 2.2e32
4 E41S20
(-586",-255") 		E49-E31
(18) 		0.5 -0.8 -1.8e32
5 E36S80
(-97",-925") 		E69-W47
(116) 		0.3 -1.0 -1.5e33
6 W53S75
(196",-906") 		W66-W82
(16) 		0.2 -0.7 -6.7e32
7 E24N02
(-394",123") 		E26-E22
(4) 		0.0 -1.4 -1.8e31
8 W06N13
(93",307") 		W04-W07
(3) 		0.0 -2.3 -2.3e31
9 E48S25
(-642",-347") 		E49-E45
(4) 		0.0 -2.9 -8.0e31

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 11-Apr-2018 23:30 UT .