23 January 2018
⇐20180122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180124⇒

NOAA
1 Active Region
12696

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 E13S58
(-117",-780") 		E84-W30
(114) 		5.9 -1.1 -5.2e33
2 W15S18
(245",-217") 		E02-W29
(31) 		2.3 -0.0 -3.5e30
3 E19N27
(-290",516") 		E34-E06
(28) 		1.3 0.8 4.1e32
4 E26N57
(-231",863") 		E54-W04
(58) 		1.3 0.4 1.0e33
5 E06N14
(-103",328") 		E14-W06
(20) 		1.0 0.9 2.0e32

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 23-Jan-2018 20:30 UT .