4 March 2023
20230303 Week Rotation Today Rotation Week 20230305



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W32N07
(513",228")
W14-W47
(33)
4.7 -1.2 -1.0e21
2 W18N30
(258",585")
E00-W27
(27)
1.1 -9.0 -2.0e21
3 W24S61
(195",-784")
W06-W33
(27)
0.3 -0.5 -4.1e19
4 W17N11
(284",297")
W14-W21
(7)
0.2 0.9 2.9e19
5 E09S17
(-147",-159")
E13-E05
(8)
0.1 -13.0 -2.3e20

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 4-Mar-2023 20:30 UT .