31 December 2019
⇐20191230 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200101⇒

NOAA
1 Active Region
12753

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 E05S13
(-87",-164") 		E55-W46
(101) 		11.8 -0.1 -2.1e20
2 E03S64
(-25",-855") 		E77-W58
(135) 		4.4 -0.9 -4.7e21
3 W02N68
(15",924") 		E46-W41
(87) 		0.9 1.0 2.9e21

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 31-Dec-2019 20:30 UT .