12 April 2018
⇐20180411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180413⇒

NOAA
0 Active Regions

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 E17S07
(-277",-32") 		E29-W08
(37) 		3.6 0.2 1.2e32
2 W24N17
(373",366") 		W17-W31
(14) 		0.8 -0.7 -1.9e32
3 E58S11
(-800",-132") 		E73-E47
(26) 		0.8 -0.3 -2.3e32
4 W40N14
(596",300") 		W31-W49
(18) 		0.7 -0.6 -2.3e32
5 E14S78
(-50",-911") 		E58-W75
(133) 		0.5 -1.0 -1.8e33
6 W59N09
(816",193") 		W51-W70
(19) 		0.4 -0.7 -3.7e32

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 12-Apr-2018 23:30 UT .