24 October 2019
⇐20191023 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191025⇒

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 W33N20
(493",263") 		W01-W59
(58) 		8.2 0.8 1.3e21
2 E34S22
(-505",-432") 		E53-E10
(43) 		5.4 -0.4 -4.8e20
3 W04N71
(20",879") 		E70-W87
(157) 		2.5 1.0 9.1e20
4 W13S12
(217",-280") 		W05-W20
(15) 		1.6 -0.3 -8.9e19
5 E05N07
(-85",26") 		E12-W07
(19) 		1.4 -0.3 -6.3e19
6 W39S19
(571",-375") 		W36-W42
(6) 		0.1 -0.5 -6.2e18
7 W23S14
(360",-306") 		W21-W24
(3) 		0.1 -1.2 -1.1e19

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 24-Oct-2019 23:40 UT .