27 January 2020
⇐20200126 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200128⇒

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 E06S64
(-42",-832") 		167
(5.7e05) 		-0.7 5.2 3.0e22
2 E25S07
(-410",-34") 		E41-E04
(37) 		4.1 0.1 8.2e19
3 W27S15
(424",-170") 		W12-W40
(28) 		1.7 -0.5 -2.4e20

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-2020 20:30 UT .