3 February 2016
⇐20160202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160204⇒

NOAA
4 Active Regions
12489
12490
12491
12492

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 W49N48
(494",763") 		E13-W68
(81) 		4.0 0.6 5.7e33
2 E32N07
(-520",204") 		E39-E27
(12) 		1.0 -2.4 -8.3e32
3 E02S16
(-36",-172") 		E04-W01
(5) 		0.1 -3.3 -5.0e31
4 W41S09
(628",-75") 		W38-W43
(5) 		0.1 5.7 1.6e32
5 W43N16
(637",345") 		W41-W44
(3) 		0.1 3.4 1.3e32

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 3-Feb-2016 21:30 UT .