18 March 2017
⇐20170317 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170319⇒

NOAA
0 Active Regions

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 E27S18
(-420",-187") 		E46-W02
(48) 		8.2 1.3 3.1e33
2 W33N61
(257",884") 		E06-W55
(61) 		1.1 0.2 8.8e32
3 W53S22
(714",-300") 		W47-W58
(11) 		0.4 0.9 2.5e32

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 18-Mar-2017 20:30 UT .