17 February 2017
⇐20170216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170218⇒

NOAA
3 Active Regions
12635
12636
12634

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 W34S28
(480",-373") 		E05-W66
(71) 		4.0 1.5 2.5e33
2 E49S17
(-709",-202") 		E61-E30
(31) 		2.6 1.0 1.6e33
3 E14N54
(-133",848") 		E56-W13
(69) 		1.9 0.6 1.6e33
4 E18S31
(-253",-395") 		E27-W04
(31) 		1.8 0.5 2.6e32

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 17-Feb-2017 20:30 UT .