12 April 2020
⇐20200411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200413⇒

NOAA
1 Active Region
12759

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 W20S20
(306",-240") 		E04-W40
(44) 		4.4 -0.0 -2.9e19
2 E10S65
(-70",-826") 		E84-W82
(166) 		4.4 -0.9 -4.7e21
3 W39N62
(286",874") 		W18-W50
(32) 		0.4 0.8 1.3e21
4 W13N46
(150",747") 		W11-W17
(6) 		0.1 -0.6 -3.9e19
5 W35S11
(535",-106") 		W33-W36
(3) 		0.1 -1.0 -2.1e19
6 E21N06
(-338",197") 		E23-E20
(3) 		0.0 -1.2 -1.2e19

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 12-Apr-2020 19:30 UT .