20 March 2022
⇐20220319 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220321⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W41S65
(265",-833") 		E85-W72
(157) 		3.5 -0.9 -1.2e21
2 W31S03
(504",51") 		W16-W50
(34) 		2.6 -0.0 -2.2e19
3 W09S13
(141",-100") 		E05-W20
(25) 		2.1 2.9 9.3e20
4 E52S07
(-756",-42") 		E63-E40
(23) 		1.0 0.5 1.2e20
5 E03N07
(-42",228") 		E04-W01
(5) 		0.1 1.1 2.6e19
6 W15N02
(253",151") 		W13-W19
(6) 		0.1 -1.6 -2.7e19
7 W34N06
(535",198") 		W31-W37
(6) 		0.1 -1.9 -1.9e19
8 E04S53
(-39",-692") 		E07-E01
(6) 		0.1 -0.5 -6.2e18

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 20-Mar-2022 20:30 UT .