23 March 2018
⇐20180322 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180324⇒

NOAA
0 Active Regions

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 W21S59
(176",-760") 		E83-W58
(141) 		6.5 -0.9 -4.8e33
2 W31S16
(483",-163") 		W14-W50
(36) 		3.1 -1.1 -1.1e33
3 E43N28
(-577",525") 		E52-E33
(19) 		1.2 0.5 5.4e32

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 23-Mar-2018 20:30 UT .