2 November 2017
⇐20171101 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171103⇒

NOAA
2 Active Regions
12685
12686

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 E39N33
(-514",481") 		E62-E12
(50) 		2.8 2.4 3.8e33
2 W25N74
(114",909") 		E54-W84
(138) 		1.2 1.2 4.5e33
3 W36S65
(239",-899") 		E23-W59
(82) 		1.2 -1.0 -4.7e33
4 E53N65
(-333",853") 		E80-E34
(46) 		0.7 0.4 9.4e32
5 W55S26
(711",-466") 		W55-W59
(4) 		0.4 -3.9 -1.9e33
6 W28S28
(406",-504") 		W22-W32
(10) 		0.3 -0.5 -6.3e31
7 E07N23
(-115",307") 		E12-E03
(9) 		0.2 4.0 1.9e32
8 W50S38
(591",-625") 		W44-W57
(13) 		0.1 -0.9 -1.7e32
9 W06S40
(72",-672") 		W03-W07
(4) 		0.0 -1.5 -3.2e31
10 E29S13
(-454",-279") 		E31-E27
(4) 		0.0 -1.5 -2.0e31

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 2-Nov-2017 20:30 UT .