21 February 2022
⇐20220220 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220222⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40N03
(-630",139") 		E66-W08
(74) 		6.2 0.1 1.8e20
2 W51S70
(254",-883") 		W21-W60
(39) 		0.9 -1.3 -5.7e20
3 W35N02
(555",133") 		W31-W39
(8) 		0.2 -1.0 -4.4e19
4 E42S31
(-558",-420") 		E49-E35
(14) 		0.1 1.6 4.8e19
5 W04S53
(39",-704") 		W00-W07
(7) 		0.1 -2.7 -4.3e19
6 W42S03
(649",32") 		W39-W44
(5) 		0.1 0.8 9.0e18
7 W63S52
(530",-729") 		W58-W67
(9) 		0.0 -1.7 -3.5e19
8 E27N11
(-432",287") 		E29-E25
(4) 		0.0 -0.9 -6.3e18

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 21-Feb-2022 20:30 UT .