10 October 2021
⇐20211009 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211011⇒

NOAA
1 Active Region
12882

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 W07S09
(123",-255") 		E30-W39
(69) 		9.7 -0.0 -3.8e19
2 W36N72
(175",882") 		E77-W59
(136) 		1.3 0.8 4.7e20
3 E65N30
(-752",444") 		E69-E62
(7) 		0.4 1.8 2.4e20
4 E29N06
(-470",4") 		E31-E27
(4) 		0.0 -1.3 -9.5e18

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 10-Oct-2021 23:30 UT .