28 April 2020
⇐20200427 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200429⇒

NOAA
1 Active Region
12760

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 E14S66
(-96",-840") 		E74-W76
(150) 		4.2 -1.0 -5.7e21
2 W37S04
(578",-9") 		W28-W49
(21) 		1.4 0.0 2.9e18
3 E23N63
(-170",877") 		59
(1.9e05) 		0.4 6.7 1.3e22

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 28-Apr-2020 19:30 UT .