22 March 2017
⇐20170321 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170323⇒

NOAA
1 Active Region
12643

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 W36S17
(538",-193") 		W14-W58
(44) 		8.3 1.3 4.1e33
2 E48S26
(-642",-356") 		E80-E31
(49) 		4.3 -1.6 -4.3e33
3 W18N64
(129",910") 		E16-W40
(56) 		0.6 0.7 1.5e33
4 E33N08
(-519",231") 		E35-E31
(4) 		0.1 -4.3 -1.2e32

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 22-Mar-2017 20:30 UT .