4 March 2017
⇐20170303 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170305⇒

NOAA
4 Active Regions
12638
12641
12642
12640

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 W32S61
(249",-787") 		E84-W81
(165) 		7.4 -1.2 -9.6e33
2 E42N18
(-618",382") 		E47-E39
(8) 		0.1 1.8 8.8e31

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 4-Mar-2017 20:30 UT .