23 December 2019
⇐20191222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191224⇒

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 W16S18
(256",-266") 		E29-W44
(73) 		8.3 -0.3 -5.8e20
2 E16S23
(-250",-347") 		E29-W04
(33) 		2.4 -0.1 -4.8e19
3 E35S68
(-209",-896") 		E63-W17
(80) 		1.6 -0.8 -3.7e21
4 E24N66
(-159",905") 		E62-W09
(71) 		0.9 0.9 2.3e21
5 W45S72
(210",-922") 		W49-W59
(10) 		0.1 -1.0 -6.1e20
6 E51S16
(-726",-253") 		E53-E48
(5) 		0.1 -0.8 -3.1e19

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 23-Dec-2019 20:30 UT .