16 October 2019
⇐20191015 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191017⇒

NOAA
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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 E09S42
(-112",-711") 		E27-W43
(70) 		6.7 -0.8 -1.1e21
2 W26N69
(153",863") 		E54-W60
(114) 		3.0 1.4 1.6e21
3 E70N14
(-882",195") 		E78-E64
(14) 		0.2 0.8 7.8e19
4 W21S50
(216",-795") 		W17-W26
(9) 		0.1 -1.8 -4.8e19
5 W09S28
(126",-539") 		W05-W11
(6) 		0.1 -1.8 -3.1e19
6 W13S27
(188",-516") 		W11-W14
(3) 		0.1 -1.1 -1.3e19
7 W38N20
(565",255") 		W36-W40
(4) 		0.0 -1.2 -9.7e18

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 16-Oct-2019 23:40 UT .