28 February 2016
⇐20160227 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160229⇒

NOAA
2 Active Regions
12506
12507

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 W22N46
(253",772") 		E40-W66
(106) 		7.6 1.2 8.5e33
2 W15S12
(250",-78") 		W09-W21
(12) 		0.6 6.1 8.0e32
3 W64S69
(307",-881") 		W80-W88
(8) 		0.5 -0.9 -1.9e33
4 E34N13
(-527",316") 		E38-E30
(8) 		0.1 -4.6 -2.8e32

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 28-Feb-2016 21:35 UT .