8 September 2020
⇐20200907 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200909⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N70
(-118",850") 		E88-W78
(166) 		3.2 1.2 1.4e21
2 W13N26
(198",304") 		E07-W22
(29) 		2.3 -0.0 -1.0e19
3 E21S60
(-170",-876") 		E35-W23
(58) 		1.1 -0.8 -3.8e20
4 E32S14
(-495",-333") 		E39-E26
(13) 		0.5 -0.7 -6.7e19
5 E27S28
(-388",-541") 		E29-E24
(5) 		0.1 -1.1 -3.4e19
6 W35S02
(549",-133") 		W31-W39
(8) 		0.1 0.6 1.6e19
7 W35N53
(329",702") 		W28-W40
(12) 		0.1 -0.3 -1.0e19
8 E30S22
(-439",-448") 		E32-E28
(4) 		0.1 -1.2 -1.7e19
9 W09S22
(139",-462") 		W06-W11
(5) 		0.1 -1.8 -1.8e19

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 8-Sep-2020 19:00 UT .