4 February 2020
⇐20200203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200205⇒

NOAA
0 Active Regions

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 W15S58
(135",-770") 		E72-W35
(107) 		7.9 -0.9 -5.7e21
2 W18N07
(301",219") 		W03-W33
(30) 		3.5 -0.1 -5.8e19
3 E05S14
(-77",-130") 		E24-W18
(42) 		3.1 0.3 1.6e20
4 E39N23
(-571",452") 		E49-E30
(19) 		1.1 0.6 4.3e20
5 E12N67
(-78",931") 		E35-W10
(45) 		0.4 0.8 1.1e21
6 E05N13
(-86",328") 		E07-E03
(4) 		0.0 -0.8 -6.6e18

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 4-Feb-2020 20:30 UT .