3 October 2015
⇐20151002 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20151004⇒

NOAA
4 Active Regions
12420
12422
12427
12426

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 W04N55
(35",722") 		E58-W53
(111) 		8.7 0.5 2.8e33
2 E32N01
(-509",-71") 		E49-E14
(35) 		4.5 2.8 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 3-Oct-2015 18:30 UT .