2 August 2017
⇐20170801 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170803⇒

NOAA
1 Active Region
12669

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 -477
(-19",621") 		7.8e05
(17.5) 		7.1 -5.9 -4.6e34
2 -591
(-544",292") 		1.4e04
(0.3) 		6.5 -6.2 -8.8e32
3 -21
(16",-602") 		3.0e03
(0.1) 		5.5 -6.5 -2.0e32
4 112
(144",-915") 		3.4e04
(0.0) 		4.7 -6.8 -2.3e33

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 2-Aug-2017 23:30 UT .