20 February 2019
⇐20190219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190221⇒

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 E06S73
(-31",-884") 		E65-W80
(145) 		2.4 -1.1 -4.5e21
2 E50S17
(-714",-203") 		E65-E36
(29) 		1.1 -0.7 -5.2e20
3 W46S12
(679",-118") 		W35-W56
(21) 		0.8 0.6 2.9e20
4 E18S39
(-239",-514") 		E21-E15
(6) 		0.2 0.6 4.5e19
5 E23N69
(-136",937") 		E45-W09
(54) 		0.2 0.9 1.2e21
6 W47S29
(625",-396") 		W45-W50
(5) 		0.0 -0.9 -2.4e19

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 20-Feb-2019 20:30 UT .