13 February 2018
⇐20180212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180214⇒

NOAA
2 Active Regions
12699
12698

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 E13N12
(-219",316") 		E34-W24
(58) 		5.9 -1.6 -2.3e33
2 W42S73
(193",-897") 		W10-W87
(77) 		0.8 -1.4 -3.2e33
3 E46S24
(-640",-324") 		E52-E41
(11) 		0.2 -1.1 -1.0e32

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 13-Feb-2018 20:30 UT .