20 January 2015
⇐20150119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150121⇒

NOAA
7 Active Regions
12259
12265
12266
12267
12261
12263
12264

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N47
(-138",768") 		E42-W26
(68) 		5.2 0.6 2.5e33
2 E29S65
(-205",-847") 		E84-W33
(117) 		4.3 -0.8 -4.9e33
3 E31N34
(-415",610") 		E38-E24
(14) 		0.3 1.1 2.1e32

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 20-Jan-2015 22:35 UT .