29 June 2021
⇐20210628 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210630⇒

NOAA
3 Active Regions
12835
12836
12837

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 W35N67
(214",853") 		E68-W82
(150) 		2.3 1.0 9.5e20
2 E30N06
(-473",60") 		E42-E12
(30) 		1.5 0.1 2.0e19
3 W33S10
(511",-201") 		W30-W37
(7) 		0.1 -0.8 -1.9e19
4 W55S13
(756",-233") 		W51-W59
(8) 		0.1 -0.4 -7.6e18

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 29-Jun-2021 19:30 UT .