20 April 2020
⇐20200419 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200421⇒

NOAA
0 Active Regions

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 W04S10
(73",-88") 		E41-W45
(86) 		14.5 -0.1 -1.3e20
2 W12S63
(90",-810") 		E78-W61
(139) 		5.8 -1.0 -6.2e21
3 E29S30
(-398",-414") 		E31-E27
(4) 		0.1 -0.5 -1.4e19
4 E52S11
(-739",-125") 		E54-E49
(5) 		0.1 -1.3 -5.0e19
5 W39S32
(505",-451") 		W36-W41
(5) 		0.0 -1.5 -3.7e19
6 E35S21
(-516",-268") 		E37-E33
(4) 		0.0 -0.9 -1.3e19

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 20-Apr-2020 19:30 UT .