12 April 2017
⇐20170411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170413⇒

NOAA
2 Active Regions
12650
12648

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 E04N59
(-36",867") 		E60-W61
(121) 		2.9 0.6 2.7e33
2 E39S22
(-565",-289") 		E62-E19
(43) 		2.4 0.7 7.8e32
3 W39S71
(198",-876") 		E59-W86
(145) 		2.1 -1.3 -6.5e33
4 W14S26
(214",-333") 		W03-W20
(17) 		0.6 1.0 1.5e32

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 12-Apr-2017 19:30 UT .