20 January 2022
⇐20220119 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220121⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N06
(-348",177") 		E37-W05
(42) 		3.8 0.7 4.5e20
2 W27S62
(213",-819") 		E72-W77
(149) 		3.4 -1.2 -1.3e21
3 W08N21
(124",427") 		E01-W12
(13) 		0.5 2.7 2.5e20
4 W34S01
(552",59") 		W30-W39
(9) 		0.2 -1.6 -6.1e19

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 20-Jan-2022 20:30 UT .