18 July 2018
⇐20180717 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180719⇒

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Flare Forecast
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MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W15N55
(138",726") 		E84-W35
(119) 		8.6 0.9 5.1e21
2 E47S15
(-664",-292") 		E75-E27
(48) 		3.3 -0.6 -1.3e21
3 W05S06
(83",-175") 		E19-W24
(43) 		2.4 -0.2 -7.5e19
4 W34N11
(519",116") 		W26-W41
(15) 		1.3 2.0 9.0e20
5 E12S65
(-83",-885") 		E46-W10
(56) 		0.6 -0.8 -1.3e21
6 W41S04
(618",-128") 		W40-W42
(2) 		0.1 3.0 8.7e19
7 E24N26
(-340",355") 		E25-E22
(3) 		0.0 -1.4 -1.7e19

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 18-Jul-2018 23:10 UT .