24 March 2018
⇐20180323 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180325⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20S64
(146",-811") 		E87-W61
(148) 		4.7 -1.2 -6.2e33
2 E32N33
(-428",607") 		E48-E14
(34) 		3.3 0.7 1.6e33
3 W42S03
(642",33") 		W32-W52
(20) 		1.1 -1.4 -7.2e32
4 W52S17
(723",-215") 		W48-W58
(10) 		0.3 -1.0 -1.7e32
5 W57S32
(692",-448") 		W50-W67
(17) 		0.2 -0.5 -1.4e32
6 E34S16
(-517",-174") 		E36-E32
(4) 		0.1 -0.8 -1.6e31
7 W65S25
(787",-365") 		W61-W70
(9) 		0.0 -1.1 -8.4e31

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 24-Mar-2018 20:30 UT .