19 December 2022
⇐20221218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20221220⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E20N09
(-328",177") 		E32-E03
(29) 		2.2 0.6 2.3e20
2 W28N19
(430",335") 		W16-W41
(25) 		1.6 2.0 6.0e20
3 W29S45
(336",-676") 		W15-W40
(25) 		0.5 -3.2 -3.9e20
4 W07N22
(117",394") 		E01-W12
(13) 		0.4 7.9 5.6e20
5 E32N49
(-340",751") 		E40-E24
(16) 		0.2 -0.3 -2.2e19
6 W34S07
(540",-95") 		W32-W36
(4) 		0.1 1.1 1.0e19
7 E02N15
(-28",285") 		E04-W01
(5) 		0.0 5.0 3.2e19
8 W26S60
(211",-838") 		W22-W30
(8) 		0.0 -1.2 -1.3e19

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 19-Dec-2022 20:30 UT .