31 January 2022
⇐20220130 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220201⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W33S07
(522",-30") 		E08-W54
(62) 		5.2 0.1 8.4e19
2 E22S09
(-366",-55") 		E31-E05
(26) 		3.3 -0.9 -4.6e20
3 E43S36
(-531",-516") 		E56-E32
(24) 		1.0 -1.0 -2.4e20
4 W08S28
(113",-371") 		W04-W11
(7) 		0.1 -1.9 -3.3e19
5 E54S27
(-701",-381") 		E55-E52
(3) 		0.1 -1.0 -1.5e19
6 W36N11
(570",259") 		W34-W38
(4) 		0.0 -1.1 -8.7e18

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 31-Jan-2022 20:30 UT .