29 May 2017
⇐20170528 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170530⇒

NOAA
2 Active Regions
12659
12660

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 -467
(-63",-814") 		6.1e05
(5.4) 		5.8 -6.7 -4.1e34
2 -238
(169",-339") 		1.3e05
(5.3) 		6.8 -5.9 -7.9e33
3 -421
(-43",865") 		4.6e05
(2.5) 		6.4 -5.4 -2.5e34

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 29-May-2017 23:30 UT .