29 February 2016
⇐20160228 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160301⇒

NOAA
3 Active Regions
12506
12508
12507

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 W31N48
(333",785") 		E32-W62
(94) 		5.5 0.6 4.5e33
2 E39S04
(-609",34") 		E46-E33
(13) 		0.5 -2.1 -4.0e32
3 W30N08
(486",244") 		W26-W35
(9) 		0.4 3.0 4.4e32
4 E21N13
(-334",321") 		E25-E16
(9) 		0.3 -3.1 -3.0e32
5 W30S11
(476",-87") 		W26-W34
(8) 		0.3 5.8 4.6e32
6 E56N14
(-778",294") 		E59-E52
(7) 		0.1 -4.5 -3.1e32

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 29-Feb-2016 13:30 UT .