29 October 2021
20211028 Week Rotation Today Rotation Week 20211030



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W04N58
(34",773")
E32-W49
(81)
8.2 0.5 9.9e20
2 W31N09
(492",90")
W07-W49
(42)
3.9 -0.1 -5.9e19
3 E16N11
(-270",104")
E26-W01
(27)
2.0 0.1 3.9e19
4 W48S03
(720",-101")
W44-W53
(9)
0.2 -0.5 -1.7e19
5 W23N38
(295",535")
W21-W26
(5)
0.1 -0.7 -7.5e18
6 W10N48
(108",667")
W06-W12
(6)
0.0 -1.9 -1.4e19

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 29-Oct-2021 19:30 UT .