15 January 2023
20230114 Week Rotation Today Rotation Week 20230116



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E16N01
(-270",100")
E24-E10
(14)
0.6 1.5 1.3e20
2 W09N28
(138",519")
W05-W14
(9)
0.4 5.1 3.8e20
3 E27N46
(-311",745")
E40-E19
(21)
0.3 0.3 2.4e19
4 E30N37
(-385",642")
E34-E25
(9)
0.1 0.5 1.1e19
5 E74S51
(-585",-748")
E84-E65
(19)
0.1 -0.4 -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 15-Jan-2023 20:30 UT .