4 March 2018
⇐20180303 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180305⇒

NOAA
1 Active Region
12700

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 E08N44
(-95",753") 		E52-W48
(100) 		10.7 0.8 5.8e33
2 W05S67
(34",-840") 		E56-W58
(114) 		5.1 -1.2 -7.4e33
3 W12S24
(183",-276") 		E08-W21
(29) 		2.8 -0.5 -3.5e32
4 W51N40
(572",682") 		W47-W54
(7) 		0.1 -0.3 -5.2e31

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 4-Mar-2018 20:30 UT .