12 May 2017
⇐20170511 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170513⇒

NOAA
1 Active Region
12655

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 -237
(-73",-67") 		6.1e04
(3.6) 		9.0 -4.8 -3.0e33
2 -402
(-258",823") 		2.9e05
(1.7) 		6.3 -5.5 -1.6e34
3 -262
(-133",-504") 		5.7e04
(1.7) 		7.1 -5.8 -3.3e33
4 -453
(-332",386") 		4.0e04
(1.2) 		9.6 -5.7 -2.3e33
5 -263
(-121",-906") 		2.6e05
(0.6) 		5.2 -7.4 -1.9e34
6 129
(272",876") 		1.8e05
(0.4) 		6.1 -5.5 -9.8e33
7 173
(222",-899") 		5.7e04
(0.1) 		5.0 -7.2 -4.1e33

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 12-May-2017 23:30 UT .