26 April 2018
⇐20180425 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180427⇒

NOAA
2 Active Regions
12706
12707

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 E01S58
(-12",-771") 		E65-W81
(146) 		7.2 -0.8 -4.4e33
2 E24N53
(-229",806") 		E55-W57
(112) 		4.8 0.7 4.4e33
3 W33N49
(342",760") 		W25-W40
(15) 		0.3 0.5 1.7e32
4 E35N18
(-519",356") 		E37-E33
(4) 		0.0 -0.8 -1.6e31
5 E06N27
(-93",501") 		E08-E04
(4) 		0.0 -1.0 -1.2e31

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 26-Apr-2018 15:30 UT .