20 October 2017
⇐20171019 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171021⇒

NOAA
1 Active Region
12684

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 E19N27
(-286",361") 		E38-W06
(44) 		4.6 1.2 1.6e33
2 E16N69
(-93",867") 		E83-W84
(167) 		3.1 1.0 4.9e33
3 E18S05
(-295",-168") 		E25-E07
(18) 		1.2 1.1 3.1e32
4 W40S20
(582",-391") 		W30-W48
(18) 		1.2 -1.1 -6.8e32
5 W15S67
(97",-920") 		E38-W50
(88) 		0.7 -1.1 -2.9e33
6 W42S03
(643",-125") 		W39-W45
(6) 		0.1 -1.7 -9.9e31
7 E05N03
(-89",-37") 		E07-E04
(3) 		0.0 -1.1 -8.3e30

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 20-Oct-2017 23:30 UT .