4 December 2020
20201203 Week Rotation Today Rotation Week 20201205



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16N01
(277",4")
E12-W35
(47)
8.1 -0.2 -2.8e20
2 E32N12
(-509",192")
E58-E09
(49)
5.0 -0.3 -2.8e20
3 E22N34
(-302",538")
E30-E13
(17)
0.8 -0.9 -1.3e20
4 W55N68
(302",900")
W54-W76
(22)
0.1 1.0 9.2e19
5 E10N26
(-154",424")
E12-E08
(4)
0.1 -5.6 -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 4-Dec-2020 20:30 UT .