2 May 2017
⇐20170501 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170503⇒

NOAA
2 Active Regions
12653
12654

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 E06S64
(-40",-826") 		E72-W39
(111) 		4.9 -1.1 -6.1e33
2 E11S27
(-165",-368") 		E28-W11
(39) 		4.5 -0.3 -3.1e32
3 E32N62
(-237",865") 		E52-W45
(97) 		1.9 0.6 3.1e33
4 W20N24
(304",444") 		W16-W24
(8) 		0.2 -0.8 -6.0e31
5 W21N34
(280",586") 		W18-W24
(6) 		0.0 -1.4 -3.2e31

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 2-May-2017 23:30 UT .