22 May 2015
⇐20150521 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150523⇒

NOAA
7 Active Regions
12346
12348
12349
12344
12347
12350
12351

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31S63
(-217",-834") 		E75-W60
(135) 		2.6 -0.9 -3.8e33
2 E37S14
(-557",-213") 		E54-E25
(29) 		1.2 8.1 4.2e33
3 E46N20
(-646",345") 		E67-E32
(35) 		0.9 6.9 4.1e33

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 22-May-2015 23:35 UT .