13 May 2021
⇐20210512 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210514⇒

NOAA
2 Active Regions
12822
12823

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 E33S04
(-517",-24") 		E56-E05
(51) 		6.2 -0.3 -3.3e20
2 E31S57
(-267",-771") 		E58-W66
(124) 		5.5 -0.8 -1.4e21
3 E51S23
(-679",-337") 		E55-E46
(9) 		0.1 -0.5 -1.4e19
4 W29S09
(458",-106") 		W27-W31
(4) 		0.1 1.3 2.4e19

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 13-May-2021 19:30 UT .