24 May 2017
⇐20170523 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170525⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 -399
(-35",-879") 		4.1e05
(1.9) 		5.6 -7.4 -3.0e34
2 -426
(-229",857") 		3.9e05
(1.6) 		6.9 -5.8 -2.2e34
3 82
(184",472") 		2.5e04
(0.7) 		12.6 -4.8 -1.2e33
4 -664
(-554",456") 		4.5e04
(0.7) 		6.4 -5.5 -2.5e33
5 -570
(-483",-709") 		6.1e04
(0.4) 		6.1 -6.3 -3.8e33
6 -684
(-661",-192") 		2.9e03
(0.1) 		4.6 -9.9 -2.8e32

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 24-May-2017 23:30 UT .