29 October 2018
⇐20181028 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181030⇒

NOAA
Active Regions
No Data

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 W22N67
(137",861") 		E82-W60
(142) 		3.6 0.9 5.1e21
2 E41N08
(-629",79") 		E56-E25
(31) 		3.4 1.4 2.1e21
3 W12N11
(204",115") 		E01-W21
(22) 		1.4 -0.8 -2.1e20
4 W21S64
(154",-897") 		W07-W26
(19) 		0.3 -0.8 -7.0e20

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 some time.