24 February 2012
⇐20120223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120225⇒

NOAA
5 Active Regions
11420
11421
11422
11423
11424

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18N41
(-231",713") 		E31-W42
(73) 		4.2 0.8 2.4e33
2 E31S61
(-243",-790") 		E54-W15
(69) 		4.1 0.5 2.0e33
3 W34S24
(496",-303") 		W24-W45
(21) 		1.2 8.1 3.7e33
4 E45N14
(-661",314") 		E53-E32
(21) 		0.8 -8.1 -3.9e33

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 24-Feb-2012 22:00 UT .