9 September 2020
⇐20200908 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200910⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N01
(-342",-97") 		E37-W20
(57) 		7.0 -0.0 -1.9e18
2 E15N70
(-85",852") 		E82-W93
(175) 		3.2 1.5 1.6e21
3 E09N20
(-136",207") 		E15-W04
(19) 		1.9 0.1 2.0e19
4 W22N27
(321",331") 		W08-W32
(24) 		1.8 0.2 6.1e19
5 W02S63
(16",-897") 		E35-W36
(71) 		0.9 -0.7 -2.8e20
6 W28N03
(453",-54") 		W26-W32
(6) 		0.2 1.2 3.4e19
7 W16N11
(259",72") 		W13-W19
(6) 		0.1 -1.0 -1.9e19
8 E47S59
(-358",-852") 		E49-E45
(4) 		0.1 -0.3 -1.3e19
9 W37N05
(568",-10") 		W35-W40
(5) 		0.1 -0.9 -1.1e19
10 W41N13
(612",119") 		W40-W42
(2) 		0.1 -0.6 -7.3e18

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 9-Sep-2020 19:00 UT .