30 April 2020
⇐20200429 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200501⇒

NOAA
3 Active Regions
12760
12762
12761

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 E15S07
(-249",-55") 		E34-W15
(49) 		6.8 -0.2 -2.9e20
2 W05S64
(35",-828") 		E68-W53
(121) 		4.6 -0.9 -5.0e21
3 E00N65
(-3",894") 		E50-W22
(72) 		0.9 1.1 2.5e21
4 E25N10
(-404",232") 		E27-E23
(4) 		0.1 -0.8 -2.5e19
5 E43N03
(-644",107") 		E45-E40
(5) 		0.0 -1.0 -1.8e19

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 30-Apr-2020 19:30 UT .