20 February 2018
⇐20180219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180221⇒

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 E07S51
(-69",-681") 		E56-W40
(96) 		12.0 -0.6 -3.6e33
2 E28S29
(-403",-379") 		E45-E11
(34) 		4.0 -0.5 -6.7e32
3 W11N27
(172",541") 		E07-W23
(30) 		3.0 0.4 4.8e32
4 E38S01
(-594",73") 		E45-E31
(14) 		0.4 -2.4 -3.9e32
5 W18S29
(258",-366") 		W16-W20
(4) 		0.1 -0.7 -1.5e31
6 E23S10
(-370",-52") 		E24-E21
(3) 		0.0 -1.4 -1.5e31

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-2018 20:32 UT .