16 April 2017
⇐20170415 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170417⇒

NOAA
1 Active Region
12650

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 W16S20
(245",-249") 		E14-W38
(52) 		4.9 1.4 1.7e33
2 E19N63
(-136",891") 		E54-W59
(113) 		1.6 0.8 3.2e33
3 W42S71
(204",-880") 		W18-W85
(67) 		1.1 -1.3 -4.1e33

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 16-Apr-2017 19:30 UT .