23 June 2017
⇐20170622 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170624⇒

NOAA
2 Active Regions
12662
12664

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 -398
(252",660") 		7.0e05
(11.6) 		6.4 -5.8 -4.1e34
2 -422
(-204",-850") 		3.7e05
(1.8) 		5.5 -6.5 -2.4e34
3 -291
(-118",-103") 		3.1e04
(1.7) 		6.4 -5.1 -1.6e33
4 -573
(-494",-146") 		2.3e04
(0.7) 		11.7 -6.3 -1.4e33
5 422
(439",286") 		1.5e03
(0.0) 		4.3 -7.5 -1.1e32

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-Jun-2017 23:30 UT .