31 October 2017
⇐20171030 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171101⇒

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 W23S48
(256",-765") 		E45-W37
(82) 		4.8 -1.6 -6.9e33
2 E10N73
(-51",902") 		E83-W71
(154) 		1.4 1.0 3.3e33
3 E60N31
(-718",469") 		E77-E47
(30) 		0.6 2.4 2.0e33
4 W05S26
(81",-486") 		E02-W10
(12) 		0.3 -0.7 -6.0e31
5 W40S07
(618",-175") 		W37-W43
(6) 		0.2 -1.2 -1.2e32

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 31-Oct-2017 20:30 UT .