8 July 2021
⇐20210707 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210709⇒

NOAA
3 Active Regions
12839
12840
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 E22S26
(-315",-468") 		E57-W33
(90) 		15.3 -0.7 -2.0e21
2 W15N68
(90",852") 		E81-W75
(156) 		3.1 1.0 1.1e21
3 E07S08
(-112",-187") 		E09-E04
(5) 		0.1 1.2 2.7e19
4 W29S72
(138",-913") 		W03-W37
(34) 		0.1 -0.5 -5.0e19
5 W22S19
(341",-354") 		W20-W24
(4) 		0.0 -0.7 -5.9e18
6 E11S73
(-51",-918") 		E19-W04
(23) 		0.0 -0.9 -2.9e19
7 W26N43
(305",610") 		W24-W30
(6) 		0.0 -0.6 -5.7e18
8 E45N01
(-667",-33") 		E47-E42
(5) 		0.0 -1.5 -1.2e19

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 8-Jul-2021 19:30 UT .