25 January 2018
⇐20180124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180126⇒

NOAA
1 Active Region
12696

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 E14S17
(-223",-201") 		E31-W18
(49) 		6.9 -0.4 -5.4e32
2 E18S62
(-140",-813") 		E66-W24
(90) 		5.1 -0.9 -4.8e33
3 W18N25
(268",497") 		E13-W29
(42) 		3.1 0.5 5.7e32
4 E17N60
(-146",882") 		E41-W42
(83) 		2.0 0.7 2.6e33
5 W42S39
(507",-552") 		W26-W58
(32) 		0.8 -1.0 -4.9e32
6 W50S71
(246",-896") 		W33-W56
(23) 		0.1 -1.3 -3.6e32

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 25-Jan-2018 20:30 UT .