11 February 2018
⇐20180210 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180212⇒

NOAA
2 Active Regions
12699
12698

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 E36N12
(-555",295") 		E54-E06
(48) 		3.4 -1.7 -2.5e33
2 W40S74
(177",-903") 		E42-W79
(121) 		1.4 -1.3 -5.4e33
3 W37N59
(297",877") 		W42-W60
(18) 		0.3 0.9 8.3e32
4 W35N03
(553",144") 		W33-W38
(5) 		0.0 -0.8 -1.5e31

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 11-Feb-2018 20:30 UT .