10 April 2023
⇐20230409 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230411⇒

NOAA
4 Active Regions
13272
13273
13269
13271

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 E14S46
(-157",-616") 		E32-W03
(35) 		1.6 1.9 6.0e20
2 E22N30
(-308",557") 		E27-E17
(10) 		0.5 6.3 6.2e20
3 W01N24
(17",480") 		E02-W03
(5) 		0.1 17.1 2.6e20
4 E06N24
(-88",480") 		E07-E02
(5) 		0.1 16.8 2.0e20
5 W16N21
(251",432") 		W14-W19
(5) 		0.1 15.9 1.9e20

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-Apr-2023 23:30 UT .