18 March 2015
⇐20150317 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150319⇒

NOAA
5 Active Regions
12297
12301
12302
12303
12299

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W05S58
(45",-754") 		E56-W49
(105) 		9.5 -1.3 -8.7e33
2 W30N44
(346",739") 		E23-W47
(70) 		2.8 1.4 3.9e33
3 E25S22
(-373",-257") 		E31-E17
(14) 		0.4 9.6 1.2e33
4 E46S23
(-638",-291") 		E54-E38
(16) 		0.4 0.5 1.1e32
5 W24S27
(344",-336") 		W20-W26
(6) 		0.2 -6.3 -3.2e32

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 18-Mar-2015 22:35 UT .