4 March 2019
⇐20190303 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190305⇒

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 W14S21
(223",-232") 		E21-W38
(59) 		6.6 -0.2 -3.2e20
2 W09S71
(50",-867") 		E78-W78
(156) 		3.5 -1.5 -8.0e21
3 W24N13
(385",332") 		W01-W40
(39) 		3.0 -0.2 -1.6e20
4 W44N11
(664",264") 		W35-W52
(17) 		0.5 -0.9 -2.8e20
5 W34S41
(410",-559") 		W29-W44
(15) 		0.3 -0.9 -1.2e20

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-2019 20:30 UT .