4 April 2017
⇐20170403 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170405⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E00S56
(-1",-729") 		E48-W54
(102) 		9.5 -0.8 -5.0e33
2 E12N50
(-123",802") 		E56-W24
(80) 		2.4 0.3 8.0e32
3 E40N26
(-560",488") 		E48-E35
(13) 		1.3 1.0 8.4e32
4 E28S03
(-445",42") 		E30-E25
(5) 		0.0 -1.2 -1.4e31

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 4-Apr-2017 19:30 UT .