13 February 2017
⇐20170212 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170214⇒

NOAA
2 Active Regions
12635
12634

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 W26N46
(291",771") 		E27-W46
(73) 		4.6 0.5 2.4e33
2 E20S22
(-313",-261") 		E42-W14
(56) 		4.0 1.3 1.3e33
3 W42S69
(232",-871") 		E58-W75
(133) 		2.1 -1.2 -5.4e33

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-2017 20:30 UT .