29 March 2017
⇐20170328 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170330⇒

NOAA
4 Active Regions
12644
12645
12646
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 W18S50
(191",-661") 		E65-W64
(129) 		16.4 -0.8 -7.2e33
2 E31N01
(-495",111") 		E42-E19
(23) 		1.9 0.5 3.3e32

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 29-Mar-2017 19:30 UT .