13 June 2021
⇐20210612 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210614⇒

NOAA
2 Active Regions
12829
12832

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 W21S43
(243",-654") 		E61-W44
(105) 		18.7 -0.7 -2.8e21
2 E25N12
(-399",178") 		E36-E13
(23) 		2.5 0.1 5.3e19
3 W52N69
(264",880") 		W49-W64
(15) 		0.3 0.5 8.9e19
4 E24N76
(-90",915") 		E53-E29
(24) 		0.1 1.6 7.8e19
5 W27S22
(403",-364") 		W26-W29
(3) 		0.1 -2.0 -2.6e19
6 W14N09
(223",128") 		W12-W15
(3) 		0.1 -3.9 -3.1e19
7 W03N11
(40",160") 		W01-W04
(3) 		0.0 -1.7 -1.0e19

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-Jun-2021 23:30 UT .