29 April 2022
⇐20220428 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220430⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W08S46
(91",-640") 		E13-W26
(39) 		2.0 0.1 5.9e19
2 W44S21
(623",-288") 		W34-W52
(18) 		1.5 -3.5 -1.1e21
3 E14S73
(-68",-888") 		E35-W46
(81) 		0.9 -0.7 -2.7e20
4 W28S31
(385",-430") 		W20-W37
(17) 		0.5 -1.6 -1.6e20
5 W45N04
(675",109") 		W42-W48
(6) 		0.1 -1.8 -5.6e19
6 W34N38
(419",635") 		W31-W37
(6) 		0.1 -1.6 -3.0e19
7 W07S01
(115",60") 		W05-W09
(4) 		0.1 -1.4 -1.1e19
8 E22N02
(-357",95") 		E24-E20
(4) 		0.0 -1.0 -6.4e18

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 29-Apr-2022 23:30 UT .