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2 March 2025
⇐20250301 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250303⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E51N12
(-733",282") 		E69-E39
(30) 		2.2 -3.3 -1.8e21
2 W64S34
(719",-500") 		W44-W82
(38) 		1.0 1.9 6.7e20
3 W20S54
(196",-715") 		W13-W27
(14) 		0.2 -0.6 -3.4e19
4 E46S23
(-644",-305") 		E52-E44
(8) 		0.1 -3.7 -1.1e20
5 W04S17
(57",-169") 		W00-W06
(6) 		0.1 11.1 1.9e20
6 W62N30
(746",523") 		W54-W72
(18) 		0.1 2.9 1.1e20
7 W27N11
(426",291") 		W24-W29
(5) 		0.1 14.3 1.4e20
8 E45S32
(-583",-437") 		E47-E44
(3) 		0.1 -4.8 -6.2e19

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 2-Mar-2025 20:30 UT .