27 October 2021
⇐20211026 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211028⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N61
(-94",807") 		E57-W66
(123) 		6.3 0.6 1.0e21
2 W11N08
(190",52") 		E14-W26
(40) 		4.4 -0.4 -2.5e20
3 E30N08
(-476",64") 		E45-E17
(28) 		1.8 0.2 8.0e19
4 E25N32
(-342",448") 		E31-E17
(14) 		0.4 0.9 6.3e19
5 W26N09
(413",73") 		W23-W30
(7) 		0.1 -3.9 -4.3e19
6 E47N03
(-705",-10") 		E50-E44
(6) 		0.1 -0.4 -5.4e18
7 W13N44
(159",617") 		W11-W15
(4) 		0.0 2.6 2.2e19
8 E32N47
(-343",663") 		E33-E30
(3) 		0.0 -1.5 -1.2e19

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 27-Oct-2021 19:30 UT .