1 January 2024
20231231 Week Rotation Today Rotation Week 20240102



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W40S20
(595",-301")
W22-W57
(35)
1.7 -3.2 -1.2e21
2 W34N43
(398",702")
W12-W55
(43)
1.6 -2.3 -9.7e20
3 E58S34
(-683",-523")
E74-E39
(35)
0.9 0.9 2.8e20
4 E28S26
(-409",-384")
E38-E19
(19)
0.4 8.1 5.6e20

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 1-Jan-2024 20:30 UT .