20 March 2018
⇐20180319 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180321⇒

NOAA
2 Active Regions
12701
12702

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 E00S39
(-4",-514") 		E40-W44
(84) 		19.1 -0.5 -3.2e33
2 W30S35
(390",-466") 		W27-W32
(5) 		0.0 -1.1 -2.0e31
3 W19S10
(304",-63") 		W17-W20
(3) 		0.0 -1.0 -7.8e30

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 20-Mar-2018 20:30 UT .