22 March 2012
⇐20120321 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120323⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E10N45
(-118",763") 		E23-W13
(36) 		1.0 2.3 1.9e33
2 E40S76
(-147",-907") 		E42-W02
(44) 		0.5 0.5 8.8e32
3 E41N08
(-631",213") 		E46-E36
(10) 		0.2 -2.3 -2.4e32
4 W35N07
(546",213") 		W30-W41
(11) 		0.1 -2.3 -1.2e32
5 W16N46
(189",762") 		W12-W19
(7) 		0.1 3.1 3.2e32
6 W23S18
(363",-188") 		W20-W25
(5) 		0.1 6.1 1.8e32
7 E22S19
(-336",-201") 		E24-E19
(5) 		0.1 -3.0 -7.3e31

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 22-Mar-2012 22:00 UT .