26 March 2021
⇐20210325 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210327⇒

NOAA
3 Active Regions
12811
12812
12810

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 W10S11
(162",-74") 		E15-W28
(43) 		4.5 -0.4 -2.7e20
2 W12N55
(117",847") 		E37-W22
(59) 		2.2 0.6 4.6e20
3 E16S74
(-75",-887") 		E73-W87
(160) 		1.7 -1.3 -9.2e20
4 E05S32
(-69",-418") 		E17-W10
(27) 		1.1 -2.4 -4.3e20
5 W42S09
(637",-65") 		W34-W48
(14) 		0.5 -1.8 -1.8e20
6 W36S03
(570",45") 		W29-W43
(14) 		0.2 -0.6 -1.7e19
7 E44N07
(-661",198") 		E47-E41
(6) 		0.1 -0.7 -1.2e19
8 W36N07
(559",215") 		W34-W38
(4) 		0.0 -0.8 -7.4e18

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 26-Mar-2021 20:30 UT .