19 January 2023
20230118 Week Rotation Today Rotation Week 20230120



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27S08
(-436",-60")
E35-E14
(21)
1.5 2.2 5.7e20
2 E14S69
(-83",-876")
E26-W33
(59)
1.3 -0.7 -3.4e20
3 W11N70
(63",943")
E03-W17
(20)
0.1 1.0 7.9e19
4 E62N16
(-823",315")
E64-E58
(6)
0.1 3.5 1.4e20
5 W16S55
(155",-750")
W14-W18
(4)
0.0 -1.3 -1.4e19
6 W37N07
(586",187")
W36-W39
(3)
0.0 -2.8 -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 19-Jan-2023 20:30 UT .