23 October 2019
⇐20191022 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191024⇒

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 W21N18
(328",218") 		E14-W42
(56) 		12.7 0.8 1.6e21
2 E13N70
(-72",874") 		E74-W87
(161) 		2.6 1.3 1.3e21
3 E05S15
(-89",-333") 		E17-W13
(30) 		2.3 -0.2 -8.5e19
4 E50S17
(-709",-333") 		E66-E37
(29) 		1.1 -0.5 -1.5e20
5 E43S31
(-565",-545") 		E57-E33
(24) 		0.6 -0.5 -7.0e19
6 W29S10
(468",-240") 		W26-W32
(6) 		0.1 0.7 1.9e19
7 W07N40
(97",547") 		W05-W11
(6) 		0.1 -1.1 -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 23-Oct-2019 23:40 UT .