21 April 2020
⇐20200420 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200422⇒

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 W06S12
(98",-112") 		E28-W36
(64) 		12.4 -0.2 -4.1e20
2 W10S65
(74",-825") 		E83-W54
(137) 		5.0 -1.1 -6.2e21
3 W05N24
(81",468") 		E01-W08
(9) 		0.2 -0.7 -5.2e19
4 E16S30
(-222",-411") 		E18-E13
(5) 		0.1 -1.1 -2.6e19
5 E37S05
(-573",-23") 		E40-E33
(7) 		0.1 -0.6 -1.5e19
6 W27N10
(432",233") 		W25-W29
(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 21-Apr-2020 19:30 UT .