10 July 2021
⇐20210709 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210711⇒

NOAA
3 Active Regions
12839
12841
12837

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 W05S35
(63",-588") 		E42-W44
(86) 		19.0 -0.9 -3.2e21
2 W04N68
(25",849") 		E31-W83
(114) 		2.3 0.9 7.0e20
3 W50S23
(670",-400") 		W47-W53
(6) 		0.0 -2.3 -2.7e19

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-Jul-2021 23:30 UT .