6 April 2018
⇐20180405 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180407⇒

NOAA
1 Active Region
12703

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 E31N05
(-493",175") 		E61-W02
(63) 		4.0 -2.1 -2.9e33
2 W28N61
(224",876") 		E37-W58
(95) 		1.7 1.1 5.0e33
3 W23S75
(97",-895") 		E57-W80
(137) 		1.5 -1.0 -4.0e33
4 W49N47
(499",741") 		W40-W61
(21) 		0.2 0.4 2.3e32

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 6-Apr-2018 23:30 UT .