9 May 2024
⇐20240508 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240510⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W17N27
(244",472") 		W01-W31
(30) 		2.8 4.7 2.4e21
2 E39S40
(-459",-576") 		E43-E14
(29) 		1.2 -0.8 -2.3e20
3 W13S36
(177",-517") 		E05-W22
(27) 		0.7 -10.4 -1.4e21
4 W17N53
(168",787") 		W10-W21
(11) 		0.3 -0.6 -5.6e19
5 E22S04
(-363",-15") 		E28-E18
(10) 		0.1 -1.1 -2.5e19
6 E62S39
(-652",-576") 		E70-E57
(13) 		0.1 -0.3 -1.6e19
7 E27S49
(-282",-684") 		E30-E23
(7) 		0.1 -1.7 -2.6e19
8 E13N03
(-212",95") 		E15-E11
(4) 		0.1 -1.2 -1.1e19
9 W12N03
(190",104") 		W10-W13
(3) 		0.0 5.3 3.2e19

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 9-May-2024 23:30 UT .