18 February 2018
⇐20180217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180219⇒

NOAA
0 Active Regions

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 E21N09
(-343",261") 		E44-W12
(56) 		10.2 0.1 3.7e32
2 W22S26
(332",-330") 		E12-W36
(48) 		2.8 -0.7 -5.8e32
3 E46S67
(-274",-855") 		E76-W76
(152) 		2.5 -1.1 -5.3e33
4 W54N16
(754",330") 		W45-W77
(32) 		1.2 -1.3 -1.6e33
5 E18S43
(-225",-574") 		E29-E07
(22) 		0.9 -0.9 -3.6e32
6 E39N04
(-613",163") 		E41-E37
(4) 		0.0 -1.0 -1.7e31

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-Feb-2018 20:30 UT .