8 February 2018
⇐20180207 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180209⇒

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 W40N53
(377",824") 		E48-W59
(107) 		4.5 0.8 8.2e33
2 W13S71
(74",-878") 		E62-W86
(148) 		2.9 -1.4 -6.7e33
3 W35N20
(518",424") 		W26-W46
(20) 		1.5 0.5 3.5e32
4 E62N07
(-855",171") 		E69-E55
(14) 		0.2 -1.0 -3.0e32
5 W19N31
(267",583") 		W12-W23
(11) 		0.2 -0.5 -3.4e31
6 W40S20
(594",-252") 		W39-W41
(2) 		0.0 -0.7 -1.3e31
7 W10N28
(148",550") 		W08-W11
(3) 		0.0 -1.1 -1.6e31

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 8-Feb-2018 20:30 UT .