18 June 2019
⇐20190617 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190619⇒

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 W09N04
(142",50") 		E23-W31
(54) 		5.9 -0.1 -8.2e19
2 W27S53
(255",-767") 		E44-W43
(87) 		4.3 -0.6 -2.9e21
3 E02N68
(-10",869") 		E39-W50
(89) 		1.8 1.2 4.2e21
4 E57N12
(-774",177") 		E64-E52
(12) 		0.1 -0.5 -6.6e19
5 E47S69
(-247",-888") 		E63-E35
(28) 		0.1 -1.3 -6.9e20
6 W30N35
(389",523") 		W28-W32
(4) 		0.1 -0.8 -2.2e19
7 E57S66
(-329",-865") 		E65-E49
(16) 		0.0 -1.6 -5.9e20

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 18-Jun-2019 22:50 UT .