25 May 2020
⇐20200524 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200526⇒

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 W04S56
(36",-776") 		E70-W75
(145) 		5.4 -0.8 -3.7e21
2 W30S12
(466",-169") 		W11-W43
(32) 		2.6 0.1 1.1e20
3 E28S05
(-439",-55") 		E39-E19
(20) 		1.7 -0.6 -3.0e20
4 E24N14
(-379",245") 		E29-E20
(9) 		0.2 -0.8 -4.5e19
5 E23S27
(-333",-409") 		E24-E22
(2) 		0.0 -1.3 -1.8e19

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-May-2020 13:30 UT .