13 September 2021
⇐20210912 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210914⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E11N09
(-187",38") 		E37-W25
(62) 		13.1 -0.3 -5.5e20
2 W34N70
(180",856") 		E85-W48
(133) 		2.5 1.3 1.3e21
3 W21N09
(342",45") 		W17-W26
(9) 		0.3 1.0 4.7e19
4 E43S62
(-308",-876") 		E54-E37
(17) 		0.1 -1.1 -7.2e19
5 W08N08
(135",8") 		W05-W10
(5) 		0.1 -1.5 -1.5e19
6 E17N36
(-221",471") 		E18-E15
(3) 		0.1 -1.1 -1.1e19

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 13-Sep-2021 19:30 UT .