15 February 2012
⇐20120214 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120216⇒

NOAA
4 Active Regions
11416
11418
11419
11420

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13S05
(-210",25") 		E20-E01
(19) 		2.5 -2.3 -1.1e33
2 W18S39
(237",-530") 		E10-W39
(49) 		2.1 -2.2 -1.8e33
3 E24S21
(-368",-244") 		E26-E22
(4) 		0.1 -4.6 -1.1e32

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 15-Feb-2012 22:00 UT .