3 September 2018
⇐20180902 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180904⇒

NOAA
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Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E08S02
(-140",-157") 		E18-W12
(30) 		3.5 -1.3 -8.9e20
2 W10N70
(54",851") 		E80-W66
(146) 		3.4 1.2 6.1e21
3 E03N44
(-38",574") 		E05-E01
(4) 		0.0 -0.6 -1.0e19
4 W34S11
(528",-285") 		W32-W37
(5) 		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 3-Sep-2018 23:10 UT .