21 July 2017
⇐20170720 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170722⇒

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 -336
(262",634") 		9.0e05
(16.1) 		6.8 -5.4 -4.8e34
2 -187
(-40",-121") 		3.0e04
(1.7) 		7.0 -6.4 -1.9e33
3 -437
(-367",-832") 		7.5e04
(0.2) 		5.5 -5.8 -4.3e33
4 -199
(-141",-913") 		7.4e04
(0.1) 		5.0 -6.9 -5.1e33
5 -97
(-72",-525") 		2.0e03
(0.1) 		5.0 -6.5 -1.3e32
6 -49
(-32",-311") 		9.0e02
(0.0) 		4.7 -6.0 -5.4e31

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 21-Jul-2017 23:30 UT .