8 April 2017
⇐20170407 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170409⇒

NOAA
2 Active Regions
12645
12648

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 W29S66
(187",-838") 		E77-W76
(153) 		4.5 -1.5 -1.0e34
2 E18N63
(-134",894") 		E58-W52
(110) 		1.5 0.8 3.1e33
3 W15N29
(221",555") 		W09-W24
(15) 		1.0 1.2 5.1e32
4 W41S29
(556",-392") 		W34-W51
(17) 		0.5 -0.5 -1.4e32
5 E20S55
(-183",-730") 		E28-E09
(19) 		0.3 -1.1 -2.2e32
6 W40N34
(508",598") 		W35-W46
(11) 		0.3 -0.7 -1.6e32

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 8-Apr-2017 19:30 UT .