22 September 2020
⇐20200921 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200923⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13N50
(-133",657") 		E57-W37
(94) 		15.4 0.7 2.2e21
2 E18S06
(-297",-206") 		E33-E02
(31) 		2.5 -0.2 -7.3e19
3 E30S47
(-325",-769") 		E35-E26
(9) 		0.1 -1.3 -5.3e19
4 E40N17
(-589",192") 		E42-E37
(5) 		0.1 -0.5 -8.0e18
5 E30S55
(-273",-837") 		E36-E24
(12) 		0.1 -0.3 -7.7e18
6 W03S18
(47",-399") 		W01-W05
(4) 		0.0 -1.5 -1.2e19
7 E43N12
(-645",112") 		E45-E42
(3) 		0.0 -1.2 -9.9e18
8 E33N17
(-496",177") 		E35-E30
(5) 		0.0 -0.7 -4.5e18

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 22-Sep-2020 23:30 UT .