9 February 2018
⇐20180208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180210⇒

NOAA
3 Active Regions
12699
12697
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 W17S71
(93",-881") 		E49-W87
(136) 		2.7 -1.6 -7.1e33
2 W25N60
(210",885") 		E29-W66
(95) 		1.7 0.7 2.9e33
3 W55N44
(579",714") 		W40-W75
(35) 		1.0 0.8 2.4e33
4 E51N09
(-745",219") 		E66-E36
(30) 		1.0 -1.7 -1.3e33
5 W08S06
(142",14") 		W02-W13
(11) 		0.4 -1.3 -1.0e32
6 W21N32
(295",601") 		W18-W24
(6) 		0.1 -0.7 -2.0e31
7 W36N26
(516",509") 		W36-W37
(1) 		0.0 -1.4 -3.7e31

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 9-Feb-2018 20:30 UT .