3 February 2017
⇐20170202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170204⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W35S54
(332",-733") 		E79-W64
(143) 		11.5 -1.3 -1.3e34
2 E27N08
(-433",227") 		E36-E08
(28) 		2.1 0.9 6.1e32
3 E36S07
(-575",-37") 		E44-E30
(14) 		0.6 0.5 1.1e32
4 W53S04
(777",-12") 		W47-W60
(13) 		0.3 -0.4 -1.1e32

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 3-Feb-2017 20:30 UT .