24 February 2017
⇐20170223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170225⇒

NOAA
3 Active Regions
12638
12636
12637

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 E41S34
(-530",-463") 		E70-E17
(53) 		5.9 -1.1 -3.6e33
2 W54S20
(737",-267") 		W40-W74
(34) 		2.2 1.0 1.7e33
3 W35N62
(258",897") 		E09-W55
(64) 		0.9 0.3 1.3e33
4 W30S78
(99",-920") 		E29-W90
(119) 		0.5 -1.2 -2.2e33
5 E15N08
(-253",257") 		E19-E12
(7) 		0.4 -1.2 -1.2e32

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 24-Feb-2017 20:30 UT .