19 February 2015
⇐20150218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150220⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W24S64
(169",-821") 		E70-W44
(114) 		3.8 -1.1 -4.8e33
2 W35N43
(409",728") 		W09-W46
(37) 		2.4 1.2 3.2e33
3 E30S14
(-471",-139") 		23
(3.1e04) 		8.0 19.7 6.0e33
4 E11S14
(-174",-114") 		E18-E03
(15) 		0.3 1.5 9.5e31

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 19-Feb-2015 22:35 UT .