30 July 2015
⇐20150729 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150731⇒

NOAA
4 Active Regions
12389
12390
12391
12392

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12S32
(-163",-583") 		E30-W04
(34) 		1.9 -3.4 -2.8e33
2 E25S64
(-174",-882") 		E59-W28
(87) 		1.3 -1.1 -4.3e33
3 W11N06
(175",1") 		E01-W18
(19) 		1.0 -5.6 -1.1e33
4 W27S19
(409",-384") 		W23-W31
(8) 		0.3 -11.9 -1.2e33
5 W02S04
(37",-162") 		E01-W04
(5) 		0.1 -1.4 -2.8e31
6 E03N15
(-44",161") 		E04-W00
(4) 		0.1 -19.1 -2.6e32

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 30-Jul-2015 23:35 UT .