16 December 2021
⇐20211215 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211217⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W15S54
(151",-779") 		E57-W56
(113) 		8.2 -0.7 -1.5e21
2 E31S06
(-499",-93") 		E58-E06
(52) 		5.6 -1.2 -1.2e21
3 W33S06
(531",-78") 		W10-W52
(42) 		3.2 0.1 6.6e19
4 E00N06
(-6",113") 		E14-W11
(25) 		2.0 0.2 6.9e19
5 W07S22
(109",-351") 		E01-W13
(14) 		0.3 -2.8 -1.5e20
6 W09S31
(138",-483") 		W04-W14
(10) 		0.3 -0.9 -4.7e19
7 W15S20
(232",-310") 		W08-W19
(11) 		0.2 -1.3 -4.9e19
8 W39S25
(562",-394") 		W37-W43
(6) 		0.1 -1.2 -2.1e19
9 W61S13
(835",-204") 		W57-W66
(9) 		0.0 -0.9 -1.1e19

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 16-Dec-2021 20:30 UT .