19 October 2018
⇐20181018 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181020⇒

NOAA
2 Active Regions
12724
12725

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 E11S14
(-174",-321") 		E38-W28
(66) 		14.3 -0.2 -8.1e20
2 W08N65
(52",834") 		E74-W36
(110) 		4.2 1.2 5.8e21
3 W18S68
(110",-921") 		E24-W42
(66) 		0.6 -0.8 -2.1e21
4 E06N47
(-72",641") 		E10-E03
(7) 		0.1 -0.8 -2.0e19

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 19-Oct-2018 23:10 UT .