23 May 2015
⇐20150522 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150524⇒

NOAA
7 Active Regions
12346
12348
12349
12351
12352
12353
12350

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40N26
(-544",435") 		E61-E16
(45) 		2.7 5.7 8.8e33
2 E20S65
(-134",-847") 		E74-W60
(134) 		2.3 -0.8 -3.2e33
3 E24S14
(-373",-203") 		E42-E11
(31) 		1.9 8.2 4.2e33

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 23-May-2015 23:35 UT .