12 February 2018
⇐20180211 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180213⇒

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 E28N13
(-447",323") 		E44-W09
(53) 		5.0 -1.7 -2.9e33
2 W36S74
(160",-903") 		E39-W85
(124) 		1.0 -1.4 -3.9e33

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 12-Feb-2018 20:30 UT .