20 December 2022
⇐20221219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20221221⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E07N10
(-111",193") 		E21-W12
(33) 		2.5 0.7 2.6e20
2 W39N19
(585",334") 		W28-W52
(24) 		1.1 2.6 5.8e20
3 W20N21
(304",378") 		W12-W27
(15) 		0.5 7.5 6.7e20
4 W44S44
(489",-666") 		W37-W52
(15) 		0.3 -2.6 -2.0e20
5 E27N15
(-422",283") 		E31-E23
(8) 		0.2 3.5 1.5e20
6 W18N74
(79",946") 		W04-W42
(38) 		0.1 1.3 8.1e19
7 E15N49
(-169",754") 		E18-E10
(8) 		0.1 -0.6 -8.9e18
8 E30N23
(-452",399") 		E31-E28
(3) 		0.1 49.2 5.4e20
9 E31N15
(-486",279") 		E32-E30
(2) 		0.0 8.7 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-Dec-2022 20:30 UT .