28 June 2012
⇐20120627 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120629⇒

NOAA
4 Active Regions
11512
11513
11514
11515

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E32N14
(-492",199") 		E71-E08
(63) 		5.9 -3.5 -7.1e33
2 W43N48
(426",685") 		W18-W77
(59) 		1.7 0.8 1.4e33

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 28-Jun-2012 23:00 UT .