30 December 2015
⇐20151229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20151231⇒

NOAA
3 Active Regions
12472
12473
12475

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 E13N43
(-159",700") 		E77-W57
(134) 		15.6 1.3 1.2e34
2 W05S72
(28",-912") 		E46-W74
(120) 		1.5 -1.4 -4.9e33
3 E61S14
(-832",-211") 		E71-E46
(25) 		0.6 1.8 1.5e33

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 30-Dec-2015 21:35 UT .