23 July 2017
⇐20170722 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170724⇒

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 -286
(426",691") 		9.1e05
(8.3) 		6.3 -5.6 -5.1e34
2 -377
(-240",-876") 		2.5e05
(0.6) 		5.2 -6.6 -1.6e34
3 51
(149",-884") 		6.6e04
(0.2) 		5.5 -7.0 -4.6e33
4 -45
(53",-924") 		8.0e04
(0.1) 		5.5 -7.9 -6.4e33

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 23-Jul-2017 23:30 UT .