2 January 2024
⇐20240101 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240103⇒

NOAA
4 Active Regions
13531
13534
13536
13535

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E45S33
(-582",-498") 		E58-E05
(53) 		2.8 2.6 1.8e21
2 W41N44
(469",702") 		W22-W63
(41) 		1.2 -1.7 -6.4e20
3 W50S21
(696",-315") 		W39-W65
(26) 		0.7 -3.3 -5.6e20
4 W05N51
(49",793") 		E10-W13
(23) 		0.3 -0.7 -6.3e19
5 E22N18
(-348",349") 		E25-E19
(6) 		0.0 -2.3 -1.7e19

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-Jan-2024 20:30 UT .