7 January 2021
⇐20210106 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210108⇒

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 W03N11
(50",242") 		E29-W25
(54) 		9.1 0.4 4.9e20
2 E34S77
(-119",-938") 		E63-E19
(44) 		0.2 -0.9 -8.3e19
3 W01N37
(12",641") 		E02-W04
(6) 		0.1 -0.5 -8.1e18
4 E28N32
(-394",562") 		E32-E26
(6) 		0.1 -0.7 -1.1e19
5 E31N19
(-483",364") 		E34-E29
(5) 		0.1 -1.3 -1.4e19
6 E68S57
(-490",-805") 		E75-E61
(14) 		0.0 -0.9 -2.3e19
7 E51S50
(-489",-718") 		E56-E47
(9) 		0.0 -2.3 -3.3e19

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 7-Jan-2021 20:30 UT .