28 April 2024
20240427 Week Rotation Today Rotation Week 20240429



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W11N44
(126",714")
E20-W22
(42)
4.8 -2.1 -2.3e21
2 E20N23
(-306",436")
E26-E14
(12)
0.5 2.0 1.8e20
3 E42N11
(-628",227")
E49-E35
(14)
0.3 4.6 3.2e20
4 W49S36
(581",-521")
W42-W55
(13)
0.2 3.3 1.5e20
5 E07S23
(-100",-301")
E10-E03
(7)
0.1 -16.3 -3.3e20
6 E14S47
(-155",-650")
E16-E11
(5)
0.0 -1.2 -1.2e19
7 E57S17
(-771",-234")
E60-E54
(6)
0.0 4.0 4.8e19

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 28-Apr-2024 23:30 UT .