28 December 2017
⇐20171227 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171229⇒

NOAA
1 Active Region
12692

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 E23N48
(-252",749") 		E39-W15
(54) 		6.6 0.9 4.7e33
2 W12S64
(87",-861") 		E75-W53
(128) 		3.3 -1.0 -4.7e33
3 E03N09
(-55",193") 		E17-W16
(33) 		2.9 0.1 7.6e31
4 E05S19
(-80",-274") 		37
(4.1e04) 		-0.1 6.1 2.5e33
5 E08S36
(-103",-546") 		E10-E02
(8) 		0.1 -0.6 -2.7e31

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 28-Dec-2017 20:30 UT .