9 December 2017
⇐20171208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171210⇒

NOAA
1 Active Region
12690

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 E04N55
(-44",797") 		E54-W31
(85) 		7.3 0.7 4.4e33
2 E25S20
(-382",-338") 		E41-E11
(30) 		2.7 -1.0 -8.4e32
3 W25N22
(385",365") 		W13-W33
(20) 		0.7 1.9 4.1e32
4 E56N13
(-793",214") 		E62-E50
(12) 		0.2 0.3 5.4e31
5 W43S74
(181",-936") 		W32-W61
(29) 		0.1 -1.6 -1.1e33
6 E04S39
(-48",-612") 		E07-W00
(7) 		0.1 -0.8 -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 9-Dec-2017 20:30 UT .