23 February 2020
⇐20200222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200224⇒

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 E19S66
(-125",-838") 		E51-W83
(134) 		4.3 -0.9 -4.6e21
2 E15N24
(-229",499") 		E26-W04
(30) 		2.2 0.1 5.1e19
3 W07S22
(104",-258") 		E07-W13
(20) 		1.8 -0.4 -1.6e20
4 W27S24
(397",-300") 		W25-W30
(5) 		0.1 -0.7 -3.1e19

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-Feb-2020 20:30 UT .