24 April 2020
⇐20200423 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200425⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W11S12
(178",-118") 		E32-W49
(81) 		14.0 0.0 9.1e19
2 W06S66
(37",-837") 		E82-W64
(146) 		4.1 -1.1 -5.9e21
3 W05S41
(58",-560") 		E10-W16
(26) 		1.7 -0.2 -1.3e20
4 W32N15
(487",306") 		W29-W35
(6) 		0.1 -0.7 -3.0e19
5 W37N17
(553",343") 		W35-W40
(5) 		0.1 -0.7 -3.5e19
6 E42S24
(-579",-338") 		E45-E39
(6) 		0.1 -1.2 -3.2e19
7 E26N22
(-387",424") 		E29-E24
(5) 		0.0 -1.5 -2.3e19

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 24-Apr-2020 19:30 UT .