31 December 2022
⇐20221230 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230101⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15S16
(-240",-222") 		E24-E03
(21) 		3.5 -1.9 -1.1e21
2 E20N38
(-270",638") 		E32-W02
(34) 		1.0 -5.3 -1.2e21
3 W39S73
(174",-924") 		E37-W62
(99) 		0.8 -0.5 -2.5e20
4 W48N07
(717",144") 		W41-W56
(15) 		0.6 1.1 1.5e20
5 W35S12
(547",-171") 		W28-W41
(13) 		0.2 -1.3 -5.3e19
6 W51S24
(691",-372") 		W48-W54
(6) 		0.1 -1.1 -1.8e19
7 E11N15
(-184",302") 		E13-E09
(4) 		0.1 -2.2 -2.0e19
8 W62N16
(828",296") 		W59-W66
(7) 		0.0 4.9 6.3e19
9 W29S56
(267",-782") 		W26-W31
(5) 		0.0 -2.0 -2.0e19

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-Dec-2022 20:30 UT .