22 May 2018
⇐20180521 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180523⇒

NOAA
1 Active Region
12710

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 E16N54
(-150",784") 		E46-W62
(108) 		5.4 0.4 2.3e33
2 E17S66
(-111",-856") 		E68-W64
(132) 		3.1 -1.2 -6.3e33
3 W49N34
(591",545") 		W39-W59
(20) 		0.8 0.8 6.2e32

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 22-May-2018 15:30 UT .