30 December 2022
⇐20221229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20221231⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E28S16
(-436",-223") 		E38-E15
(23) 		4.1 -1.7 -1.2e21
2 E05S06
(-86",-48") 		E19-W09
(28) 		2.0 -0.7 -2.0e20
3 W45N30
(601",513") 		W30-W55
(25) 		2.0 4.7 2.4e21
4 W29S02
(470",7") 		W13-W41
(28) 		1.5 0.1 3.4e19
5 W42S70
(220",-907") 		E29-W65
(94) 		0.9 -0.5 -2.5e20
6 E37N39
(-459",640") 		E43-E26
(17) 		0.4 -7.0 -6.8e20
7 E34S76
(-130",-936") 		E51-E26
(25) 		0.1 -1.0 -8.3e19
8 E33S60
(-266",-826") 		E38-E28
(10) 		0.0 -0.8 -1.3e19
9 W18S55
(171",-771") 		W15-W20
(5) 		0.0 -0.5 -5.7e18
10 E26N14
(-410",277") 		E27-E24
(3) 		0.0 -3.9 -3.1e19
11 W07S48
(76",-691") 		W04-W08
(4) 		0.0 -1.3 -1.1e19
12 W29S14
(456",-192") 		W26-W31
(5) 		0.0 -2.6 -1.7e19

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 30-Dec-2022 20:30 UT .