20 October 2024
⇐20241019 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20241021⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21S04
(-340",-159") 		E26-E13
(13) 		0.7 -4.8 -5.7e20
2 W32N09
(505",73") 		W19-W40
(21) 		0.6 4.4 4.8e20
3 E64N58
(-463",791") 		E87-E71
(16) 		0.4 -0.9 -1.8e20
4 W07N53
(67",713") 		E01-W11
(12) 		0.1 -1.2 -4.1e19
5 E26N14
(-405",160") 		E29-E23
(6) 		0.1 -4.8 -1.0e20
6 E32N17
(-495",205") 		E34-E30
(4) 		0.1 -1.9 -3.9e19
7 W54N37
(622",537") 		W48-W60
(12) 		0.1 4.8 1.2e20

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-Oct-2024 23:30 UT .