28 January 2020
⇐20200127 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200129⇒

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 E25S14
(-402",-157") 		E51-W14
(65) 		7.6 0.1 1.2e20
2 E06S59
(-54",-785") 		E80-W59
(139) 		7.4 -0.6 -3.4e21
3 W37S15
(568",-175") 		W24-W48
(24) 		1.5 -0.2 -1.1e20
4 E19N04
(-312",153") 		E22-E16
(6) 		0.1 -0.9 -3.1e19
5 W22S20
(349",-246") 		W21-W24
(3) 		0.0 -3.1 -4.0e19

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 28-Jan-2020 20:30 UT .