19 February 2019
⇐20190218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190220⇒

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 W40S11
(616",-96") 		W27-W51
(24) 		2.1 0.6 5.1e20
2 W35S74
(160",-897") 		E79-W81
(160) 		1.7 -1.2 -5.1e21
3 E55S17
(-762",-214") 		E71-E42
(29) 		0.7 -0.5 -3.1e20
4 E63S62
(-406",-826") 		E75-E61
(14) 		0.4 -0.6 -7.4e20
5 W38N63
(274",900") 		W17-W61
(44) 		0.3 0.8 1.3e21

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 19-Feb-2019 20:30 UT .