21 August 2013
⇐20130820 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130822⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22N11
(-350",76") 		E33-E12
(21) 		1.2 -1.3 -3.6e32
2 W36N06
(559",7") 		W28-W42
(14) 		1.0 3.3 1.2e33
3 E01S33
(-7",-604") 		E11-W13
(24) 		0.8 4.9 1.7e33
4 E18N55
(-169",708") 		E21-E06
(15) 		0.7 -0.4 -1.8e32
5 W25N55
(229",716") 		W21-W29
(8) 		0.1 -1.0 -9.9e31
6 W26N18
(396",189") 		W22-W30
(8) 		0.1 3.5 9.7e31
7 E49N57
(-391",750") 		E49-E46
(3) 		0.1 -1.3 -1.4e32
8 W17N52
(166",679") 		W14-W20
(6) 		0.1 -2.2 -7.2e31

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 21-Aug-2013 21:00 UT .