1 October 2018
⇐20180930 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181002⇒

NOAA
1 Active Region
12723

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 E43N08
(-652",58") 		E61-E30
(31) 		3.1 1.4 2.1e21
2 W31N70
(168",864") 		E76-W64
(140) 		2.8 1.4 7.5e21
3 W11S11
(185",-291") 		W04-W18
(14) 		1.6 -1.7 -6.1e20

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 1-Oct-2018 23:10 UT .