21 October 2015
⇐20151020 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20151022⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W41N09
(624",82") 		W29-W49
(20) 		1.0 -3.0 -1.3e33
2 W11N26
(162",338") 		W01-W17
(16) 		0.6 -8.8 -1.3e33
3 W23N15
(360",169") 		W17-W30
(13) 		0.4 -10.2 -9.7e32
4 E01S41
(-9",-695") 		E04-W04
(8) 		0.1 -3.2 -1.4e32

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 21-Oct-2015 23:35 UT .