31 July 2017
⇐20170730 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170801⇒

NOAA
1 Active Region
12669

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 -516
(-176",670") 		7.1e05
(12.4) 		7.9 -6.0 -4.2e34
2 483
(627",-285") 		1.0e05
(1.8) 		5.8 -6.2 -6.4e33
3 -133
(-1",-912") 		1.7e05
(0.4) 		5.0 -6.5 -1.1e34
4 248
(304",-874") 		6.8e04
(0.1) 		4.3 -7.9 -5.4e33
5 -61
(-39",-679") 		2.8e03
(0.1) 		5.1 -6.0 -1.7e32
6 -504
(-489",505") 		2.6e03
(0.0) 		5.0 -5.9 -1.5e32

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 31-Jul-2017 23:30 UT .