25 January 2020
⇐20200124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200126⇒

NOAA
1 Active Region
12757

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 E11S59
(-94",-789") 		E78-W71
(149) 		6.8 -0.6 -3.5e21
2 E27S24
(-400",-317") 		E45-W08
(53) 		5.0 -0.1 -9.3e19
3 W08N02
(143",119") 		E07-W17
(24) 		1.8 -0.0 -2.0e18
4 W17N19
(271",394") 		W15-W20
(5) 		0.1 -1.3 -4.1e19

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 25-Jan-2020 20:30 UT .