21 May 2018
⇐20180520 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180522⇒

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 W05N51
(54",755") 		E51-W48
(99) 		6.3 0.7 3.2e33
2 E25S67
(-154",-865") 		E78-W69
(147) 		2.4 -1.2 -6.2e33
3 E00S53
(-1",-736") 		E06-W04
(10) 		0.1 -0.5 -4.8e31
4 E49S19
(-679",-288") 		E53-E45
(8) 		0.1 -1.0 -6.8e31
5 E31S02
(-486",-3") 		E32-E29
(3) 		0.1 -1.5 -2.7e31
6 W19S18
(300",-268") 		W17-W21
(4) 		0.0 -0.9 -9.8e30

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 21-May-2018 15:30 UT .