11 October 2021
⇐20211010 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211012⇒

NOAA
3 Active Regions
12882
12883
12884

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 W21S07
(337",-220") 		E18-W48
(66) 		8.5 -0.3 -4.8e20
2 E56N30
(-691",430") 		E66-E46
(20) 		0.9 1.7 4.3e20
3 E27N13
(-420",133") 		E35-E17
(18) 		0.9 0.8 1.2e20
4 W30N78
(100",917") 		E88-W60
(148) 		0.6 1.2 4.1e20
5 E56N70
(-274",878") 		E78-E59
(19) 		0.4 0.6 1.2e20
6 E18N41
(-226",561") 		E21-E15
(6) 		0.1 -1.4 -3.2e19

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 11-Oct-2021 19:30 UT .