12 February 2015
⇐20150211 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150213⇒

NOAA
3 Active Regions
12280
12281
12282

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W11S01
(182",94") 		E09-W24
(33) 		4.1 -3.5 -2.7e33
2 E63S58
(-461",-790") 		E84-E67
(17) 		0.7 -0.3 -5.5e32
3 E61N26
(-765",478") 		E72-E49
(23) 		0.5 2.0 2.0e33

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 12-Feb-2015 22:35 UT .