25 March 2017
⇐20170324 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170326⇒

NOAA
1 Active Region
12643

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 E27S42
(-327",-560") 		E69-W13
(82) 		13.9 -1.4 -9.0e33
2 E32S23
(-465",-287") 		E35-E28
(7) 		0.1 -1.0 -2.2e31

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 25-Mar-2017 20:30 UT .