5 April 2018
⇐20180404 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180406⇒

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 E30N04
(-475",159") 		E56-E01
(55) 		3.6 -2.5 -2.9e33
2 W24N60
(192",876") 		E39-W56
(95) 		1.8 0.9 3.7e33
3 W39S74
(169",-894") 		E66-W87
(153) 		1.5 -1.3 -5.8e33
4 W48N44
(510",714") 		W32-W63
(31) 		0.7 0.5 6.5e32
5 E64S72
(-262",-894") 		E74-E47
(27) 		0.1 -1.3 -8.3e32

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 5-Apr-2018 23:30 UT .