27 January 2017
⇐20170126 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170128⇒

NOAA
3 Active Regions
12628
12629
12627

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 E47S31
(-612",-448") 		E78-E25
(53) 		7.0 -1.3 -6.3e33
2 W37S13
(579",-142") 		W24-W53
(29) 		3.4 1.0 1.4e33
3 E35S71
(-177",-895") 		E85-W80
(165) 		2.0 -1.1 -5.2e33
4 E09N61
(-76",892") 		E32-W29
(61) 		1.6 0.6 2.0e33

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 27-Jan-2017 20:30 UT .