30 March 2020
⇐20200329 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200331⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W13S64
(98",-811") 		E70-W47
(117) 		5.1 -0.7 -3.8e21
2 W24S08
(383",-34") 		E03-W39
(42) 		4.4 0.2 2.2e20
3 E18N09
(-294",255") 		E25-E09
(16) 		1.8 0.3 1.4e20
4 E58S56
(-461",-756") 		E86-E60
(26) 		0.4 -0.4 -2.7e20
5 W14N09
(229",256") 		W11-W16
(5) 		0.1 -1.5 -3.1e19
6 E64S51
(-540",-716") 		E74-E57
(17) 		0.1 -1.0 -1.4e20
7 W19S39
(248",-516") 		W17-W21
(4) 		0.0 -0.9 -1.5e19

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 30-Mar-2020 19:30 UT .