17 March 2018
⇐20180316 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180318⇒

NOAA
1 Active Region
12701

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 E26S26
(-380",-324") 		E57-W24
(81) 		24.0 -0.1 -6.0e32
2 W54N14
(760",295") 		W46-W66
(20) 		0.4 -0.5 -1.9e32
3 W64N08
(858",190") 		W55-W72
(17) 		0.3 -1.0 -5.1e32
4 E29S50
(-304",-667") 		E34-E25
(9) 		0.1 -0.7 -4.6e31
5 W30S81
(73",-931") 		W10-W43
(33) 		0.1 -1.5 -5.1e32
6 E61S02
(-844",22") 		E65-E57
(8) 		0.1 -0.9 -6.2e31
7 W69S74
(243",-910") 		W56-W89
(33) 		0.0 -1.3 -3.9e32

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 17-Mar-2018 20:34 UT .