22 February 2020
⇐20200221 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200223⇒

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 E20S67
(-131",-844") 		E55-W88
(143) 		4.3 -0.9 -5.0e21
2 E19N19
(-298",426") 		E29-E01
(28) 		3.0 0.0 4.8e19
3 W07S20
(107",-220") 		E13-W21
(34) 		2.1 -0.2 -9.3e19
4 W23S24
(346",-286") 		W20-W26
(6) 		0.2 -0.9 -4.9e19

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 22-Feb-2020 20:30 UT .