1 January 2018
⇐20171231 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180102⇒

NOAA
0 Active Regions

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 W10S69
(60",-889") 		E72-W56
(128) 		2.7 -1.4 -6.7e33
2 W06N63
(44",891") 		E30-W57
(87) 		2.4 0.9 3.9e33
3 W41N34
(528",584") 		W25-W56
(31) 		1.9 0.9 1.4e33
4 E54N34
(-655",571") 		E67-E52
(15) 		0.6 1.1 9.6e32

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 1-Jan-2018 20:30 UT .