7 April 2021
⇐20210406 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210408⇒

NOAA
1 Active Region
12813

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 E05N09
(-75",257") 		E42-W35
(77) 		11.1 0.1 2.1e20
2 E21S68
(-129",-851") 		E58-W84
(142) 		2.5 -1.0 -8.8e20
3 W10S28
(150",-360") 		E02-W17
(19) 		0.5 -1.6 -1.4e20
4 W42N15
(625",322") 		W37-W49
(12) 		0.3 -1.5 -1.0e20
5 E13S12
(-207",-97") 		E18-E08
(10) 		0.2 1.4 5.1e19
6 W40S09
(613",-66") 		W36-W43
(7) 		0.2 -1.2 -3.7e19
7 W44N03
(669",117") 		W41-W47
(6) 		0.1 -0.9 -1.6e19
8 W34N24
(495",462") 		W32-W36
(4) 		0.1 1.1 1.2e19
9 W26N16
(401",347") 		W24-W28
(4) 		0.0 -3.4 -2.7e19
10 W30N21
(448",420") 		W28-W31
(3) 		0.0 3.5 2.9e19
11 W64S24
(787",-354") 		W61-W67
(6) 		0.0 2.5 3.6e19

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 7-Apr-2021 19:30 UT .