25 February 2020
⇐20200224 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200226⇒

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 E13S61
(-103",-781") 		E86-W39
(125) 		7.3 -0.8 -4.5e21
2 E17S22
(-265",-249") 		E34-E02
(32) 		3.2 -0.3 -2.7e20
3 E07N01
(-118",129") 		E18-W07
(25) 		2.5 -0.1 -3.6e19
4 W19N14
(307",342") 		W02-W32
(30) 		2.0 -0.2 -9.9e19
5 E07N27
(-108",540") 		E10-E04
(6) 		0.1 -0.6 -1.0e19
6 234
(261",W16S07") 		3
(9.6e02) 		-1.1 4.6 4.4e19
7 W34N67
(213",924") 		W28-W48
(20) 		0.0 -1.1 -3.1e20

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-Feb-2020 20:30 UT .